diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
index 09d4239..97da9f2 100644
--- a/Source/WebKit/ChangeLog
+++ b/Source/WebKit/ChangeLog
@@ -1,3 +1,22 @@
+2019-05-19  Alex Christensen  <achristensen@webkit.org>
+
+        Revert r240956
+        https://bugs.webkit.org/show_bug.cgi?id=198007
+        <rdar://problem/49808949>
+
+        Reviewed by Alexey Proskuryakov.
+
+        r240956 made SafariForWebKitDevelopment crash when using WebKit nightly builds.
+        Since it's not needed and the binary reduction wasn't too big, just revert that revision.
+
+        * Shared/API/Cocoa/WKMain.h: Removed.
+        * Shared/API/Cocoa/WKMain.mm: Removed.
+        * Shared/EntryPointUtilities/Cocoa/AuxiliaryProcessMain.cpp: Removed.
+        * Shared/EntryPointUtilities/Cocoa/XPCService/XPCServiceMain.mm:
+        (main):
+        * SourcesCocoa.txt:
+        * WebKit.xcodeproj/project.pbxproj:
+
 2019-05-18  Jiewen Tan  <jiewen_tan@apple.com>
 
         [WebAuthN] Allow authenticators that support both CTAP and U2F to try U2F if CTAP fails in authenticatorGetAssertion
diff --git a/Source/WebKit/Shared/API/Cocoa/WKMain.h b/Source/WebKit/Shared/API/Cocoa/WKMain.h
deleted file mode 100644
index 7766892..0000000
--- a/Source/WebKit/Shared/API/Cocoa/WKMain.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2019 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <WebKit/WKBase.h>
-#include <WebKit/WKFoundation.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-WK_EXPORT int WKXPCServiceMain(int argc, const char** argv) WK_API_AVAILABLE(macos(WK_MAC_TBA), ios(WK_IOS_TBA));
-WK_EXPORT int WKDaemonMain(int argc, const char** argv) WK_API_AVAILABLE(macos(WK_MAC_TBA), ios(WK_IOS_TBA));
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/Source/WebKit/Shared/API/Cocoa/WKMain.mm b/Source/WebKit/Shared/API/Cocoa/WKMain.mm
deleted file mode 100644
index c42455b..0000000
--- a/Source/WebKit/Shared/API/Cocoa/WKMain.mm
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2019 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "WKMain.h"
-
-#include "DaemonEntryPoint.h"
-#include "XPCServiceEntryPoint.h"
-
-int WKXPCServiceMain(int argc, const char** argv)
-{
-    return WebKit::XPCServiceMain(argc, argv);
-}
-
-int WKDaemonMain(int argc, const char** argv)
-{
-    return WebKit::DaemonMain(argc, argv);
-}
diff --git a/Source/WebKit/Shared/EntryPointUtilities/Cocoa/AuxiliaryProcessMain.cpp b/Source/WebKit/Shared/EntryPointUtilities/Cocoa/AuxiliaryProcessMain.cpp
deleted file mode 100644
index c39b1e5..0000000
--- a/Source/WebKit/Shared/EntryPointUtilities/Cocoa/AuxiliaryProcessMain.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2019 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <WebKit/WKMain.h>
-
-int main(int argc, const char** argv)
-{
-    if (argc >= 2 && strstr(argv[1], "Daemon"))
-        return WKDaemonMain(argc, argv);
-    return WKXPCServiceMain(argc, argv);
-}
diff --git a/Source/WebKit/Shared/EntryPointUtilities/Cocoa/XPCService/XPCServiceMain.mm b/Source/WebKit/Shared/EntryPointUtilities/Cocoa/XPCService/XPCServiceMain.mm
index 2b0967a..1722b0d 100644
--- a/Source/WebKit/Shared/EntryPointUtilities/Cocoa/XPCService/XPCServiceMain.mm
+++ b/Source/WebKit/Shared/EntryPointUtilities/Cocoa/XPCService/XPCServiceMain.mm
@@ -149,3 +149,8 @@
 }
 
 } // namespace WebKit
+
+int main(int argc, const char** argv)
+{
+    return WebKit::XPCServiceMain(argc, argv);
+}
diff --git a/Source/WebKit/SourcesCocoa.txt b/Source/WebKit/SourcesCocoa.txt
index d4a7723..1fe04dc 100644
--- a/Source/WebKit/SourcesCocoa.txt
+++ b/Source/WebKit/SourcesCocoa.txt
@@ -111,7 +111,6 @@
 Shared/API/Cocoa/RemoteObjectInvocation.mm
 Shared/API/Cocoa/RemoteObjectRegistry.mm
 Shared/API/Cocoa/WKBrowsingContextHandle.mm
-Shared/API/Cocoa/WKMain.mm
 Shared/API/Cocoa/WKRemoteObject.mm
 Shared/API/Cocoa/WKRemoteObjectCoder.mm
 
diff --git a/Source/WebKit/WebKit.xcodeproj/project.pbxproj b/Source/WebKit/WebKit.xcodeproj/project.pbxproj
index 1a7ca32..f53a1dd 100644
--- a/Source/WebKit/WebKit.xcodeproj/project.pbxproj
+++ b/Source/WebKit/WebKit.xcodeproj/project.pbxproj
@@ -1073,16 +1073,15 @@
 		5C4609E7224317B4009943C2 /* _WKContentRuleListAction.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C4609E222430E4C009943C2 /* _WKContentRuleListAction.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		5C4609E8224317BB009943C2 /* _WKContentRuleListActionInternal.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C4609E422430E4D009943C2 /* _WKContentRuleListActionInternal.h */; };
 		5C4B9D8B210A8CCF008F14D1 /* UndoOrRedo.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C4B9D8A210A8C46008F14D1 /* UndoOrRedo.h */; };
-		5C5CEC30220911C700D6BBB0 /* WKMain.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C5CEC2E2209114800D6BBB0 /* WKMain.h */; settings = {ATTRIBUTES = (Private, ); }; };
-		5C5CEC32220912B300D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5C5CEC31220912AF00D6BBB0 /* AuxiliaryProcessMain.cpp */; };
-		5C5CEC33220912B300D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5C5CEC31220912AF00D6BBB0 /* AuxiliaryProcessMain.cpp */; };
-		5C5CEC34220912B400D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5C5CEC31220912AF00D6BBB0 /* AuxiliaryProcessMain.cpp */; };
-		5C5CEC35220912B400D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5C5CEC31220912AF00D6BBB0 /* AuxiliaryProcessMain.cpp */; };
 		5C5D238C227A2CDA000B9BDA /* _WKCustomHeaderFields.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C5D2389227A1892000B9BDA /* _WKCustomHeaderFields.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		5C62FDF91EFC271C00CE072E /* WKURLSchemeTaskPrivate.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C62FDF81EFC263C00CE072E /* WKURLSchemeTaskPrivate.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		5C7FB47021E97DC5009E3241 /* WebCookieJar.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C7FB46F21E97C0C009E3241 /* WebCookieJar.h */; };
 		5C8BC797218CBB4800813886 /* SafeBrowsing.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 5C8BC796218CB58A00813886 /* SafeBrowsing.xcassets */; };
 		5C8DD3801FE4521600F2A556 /* WebsiteAutoplayPolicy.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C8DD37F1FE4519200F2A556 /* WebsiteAutoplayPolicy.h */; };
+		5C9A9111228F69CC005C5B17 /* XPCServiceMain.mm in Sources */ = {isa = PBXBuildFile; fileRef = BC82839616B47EC400A278FE /* XPCServiceMain.mm */; };
+		5C9A9112228F69CC005C5B17 /* XPCServiceMain.mm in Sources */ = {isa = PBXBuildFile; fileRef = BC82839616B47EC400A278FE /* XPCServiceMain.mm */; };
+		5C9A9113228F69CD005C5B17 /* XPCServiceMain.mm in Sources */ = {isa = PBXBuildFile; fileRef = BC82839616B47EC400A278FE /* XPCServiceMain.mm */; };
+		5C9A9114228F69CE005C5B17 /* XPCServiceMain.mm in Sources */ = {isa = PBXBuildFile; fileRef = BC82839616B47EC400A278FE /* XPCServiceMain.mm */; };
 		5C9E56831DF7F1B300C9EE33 /* WKWebsitePolicies.h in Headers */ = {isa = PBXBuildFile; fileRef = 5C9E56811DF7F05500C9EE33 /* WKWebsitePolicies.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		5CA26D81217ABD5B00F97A35 /* WKSafeBrowsingWarning.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CA26D80217ABBB600F97A35 /* WKSafeBrowsingWarning.h */; };
 		5CA26D83217AD1B800F97A35 /* WKSafeBrowsingWarning.mm in Sources */ = {isa = PBXBuildFile; fileRef = 5CA26D7F217ABBB600F97A35 /* WKSafeBrowsingWarning.mm */; };
@@ -3526,9 +3525,6 @@
 		5C46C0AD21B7198C00BC5991 /* WebsiteDataStoreConfiguration.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WebsiteDataStoreConfiguration.h; sourceTree = "<group>"; };
 		5C46C0AE21B71AE200BC5991 /* _WKWebsiteDataStoreConfigurationInternal.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = _WKWebsiteDataStoreConfigurationInternal.h; sourceTree = "<group>"; };
 		5C4B9D8A210A8C46008F14D1 /* UndoOrRedo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = UndoOrRedo.h; sourceTree = "<group>"; };
-		5C5CEC2E2209114800D6BBB0 /* WKMain.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WKMain.h; sourceTree = "<group>"; };
-		5C5CEC2F2209117E00D6BBB0 /* WKMain.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WKMain.mm; sourceTree = "<group>"; };
-		5C5CEC31220912AF00D6BBB0 /* AuxiliaryProcessMain.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = AuxiliaryProcessMain.cpp; path = Cocoa/AuxiliaryProcessMain.cpp; sourceTree = "<group>"; };
 		5C5CEC382209583200D6BBB0 /* DaemonEntryPoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DaemonEntryPoint.h; sourceTree = "<group>"; };
 		5C5CEC392209583200D6BBB0 /* DaemonEntryPoint.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = DaemonEntryPoint.mm; sourceTree = "<group>"; };
 		5C5D2387227A1891000B9BDA /* _WKCustomHeaderFieldsInternal.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = _WKCustomHeaderFieldsInternal.h; sourceTree = "<group>"; };
@@ -6449,8 +6445,6 @@
 				37A709A81E3EA40C00CA5969 /* WKDataDetectorTypesInternal.h */,
 				F409BA171E6E64B3009DA28E /* WKDragDestinationAction.h */,
 				37DFA6FF1810BB92001F4A9F /* WKFoundation.h */,
-				5C5CEC2E2209114800D6BBB0 /* WKMain.h */,
-				5C5CEC2F2209117E00D6BBB0 /* WKMain.mm */,
 				1A9E32991822E1CC00F5D04C /* WKRemoteObject.h */,
 				1A9E32981822E1CC00F5D04C /* WKRemoteObject.mm */,
 				1A9E329D1822FEDD00F5D04C /* WKRemoteObjectCoder.h */,
@@ -8218,7 +8212,6 @@
 			isa = PBXGroup;
 			children = (
 				BC82836B16B3587900A278FE /* XPCService */,
-				5C5CEC31220912AF00D6BBB0 /* AuxiliaryProcessMain.cpp */,
 			);
 			path = EntryPointUtilities;
 			sourceTree = "<group>";
@@ -9978,7 +9971,6 @@
 				2DD5E129210ADC7B00DB6012 /* WKKeyboardScrollingAnimator.h in Headers */,
 				51A9E10B1315CD18009E7031 /* WKKeyValueStorageManager.h in Headers */,
 				2D790A9F1AD7164900AB90B3 /* WKLayoutMode.h in Headers */,
-				5C5CEC30220911C700D6BBB0 /* WKMain.h in Headers */,
 				C98C48AA1B6FD5B500145103 /* WKMediaSessionFocusManager.h in Headers */,
 				C9CD439D1B4B024F00239E33 /* WKMediaSessionMetadata.h in Headers */,
 				1AB40EE61BF677E300BA81BE /* WKMenuItemIdentifiersPrivate.h in Headers */,
@@ -10956,7 +10948,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				5C5CEC34220912B400D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */,
+				5C9A9112228F69CC005C5B17 /* XPCServiceMain.mm in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -11333,7 +11325,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				5C5CEC35220912B400D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */,
+				5C9A9111228F69CC005C5B17 /* XPCServiceMain.mm in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -11341,7 +11333,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				5C5CEC33220912B300D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */,
+				5C9A9113228F69CD005C5B17 /* XPCServiceMain.mm in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -11349,7 +11341,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				5C5CEC32220912B300D6BBB0 /* AuxiliaryProcessMain.cpp in Sources */,
+				5C9A9114228F69CE005C5B17 /* XPCServiceMain.mm in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};