REGRESSION (r287382): libANGLE is built into a wrong location on iOS
https://bugs.webkit.org/show_bug.cgi?id=234857

Reviewed by Saam Barati.

Reverted to the prior logic to compute INSTALL_PATH.  Then added an optional prefix
for the alternate root framework location.

Source/ThirdParty/ANGLE:

* Configurations/ANGLE-dynamic.xcconfig:

Source/ThirdParty/libwebrtc:

* Configurations/libwebrtc.xcconfig:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@287642 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/ThirdParty/ANGLE/Configurations/ANGLE-dynamic.xcconfig b/Source/ThirdParty/ANGLE/Configurations/ANGLE-dynamic.xcconfig
index e406268..9dc79d0 100644
--- a/Source/ThirdParty/ANGLE/Configurations/ANGLE-dynamic.xcconfig
+++ b/Source/ThirdParty/ANGLE/Configurations/ANGLE-dynamic.xcconfig
@@ -14,15 +14,15 @@
 ANGLE_OTHER_LDFLAGS_maccatalyst = -framework IOKit -lz;
 ANGLE_OTHER_LDFLAGS_macosx = -framework IOKit -lz;
 
-INSTALL_PATH = $(INSTALL_PATH_USE_SYSTEM_CONTENT_PATH_$(USE_SYSTEM_CONTENT_PATH));
-INSTALL_PATH_USE_SYSTEM_CONTENT_PATH_YES = $(SYSTEM_CONTENT_PATH)$(NORMAL_WEBCORE_FRAMEWORKS_DIR)/WebCore.framework/Versions/A/Frameworks;
-INSTALL_PATH_USE_SYSTEM_CONTENT_PATH_ = $(INSTALL_PATH_USE_SYSTEM_CONTENT_PATH_NO);
-INSTALL_PATH_USE_SYSTEM_CONTENT_PATH_NO = $(NORMAL_WEBCORE_FRAMEWORKS_DIR)/WebCore.framework/Versions/A/Frameworks;
-INSTALL_PATH_USE_SYSTEM_CONTENT_PATH_NO[sdk=macosx*] = $(INSTALL_PATH_USE_ALTERNATE_FRAMEWORKS_DIR_$(WK_USE_ALTERNATE_FRAMEWORKS_DIR));
+INSTALL_PATH_PREFIX = $(INSTALL_PATH_PREFIX_USE_SYSTEM_CONTENT_PATH_$(USE_SYSTEM_CONTENT_PATH));
+INSTALL_PATH_PREFIX_USE_SYSTEM_CONTENT_PATH_YES = $(SYSTEM_CONTENT_PATH);
+
+INSTALL_PATH = $(INSTALL_PATH_PREFIX)$(NORMAL_WEBCORE_FRAMEWORKS_DIR)/WebCore.framework/Frameworks;
+INSTALL_PATH[sdk=macosx*] = $(INSTALL_PATH_USE_ALTERNATE_FRAMEWORKS_DIR_$(WK_USE_ALTERNATE_FRAMEWORKS_DIR));
 INSTALL_PATH_USE_ALTERNATE_FRAMEWORKS_DIR_NO = $(INSTALL_PATH_USE_OVERRIDE_FRAMEWORKS_DIR_$(WK_USE_OVERRIDE_FRAMEWORKS_DIR));
-INSTALL_PATH_USE_OVERRIDE_FRAMEWORKS_DIR_NO = $(NORMAL_WEBCORE_FRAMEWORKS_DIR)/WebCore.framework/Versions/A/Frameworks;
+INSTALL_PATH_USE_OVERRIDE_FRAMEWORKS_DIR_NO = $(INSTALL_PATH_PREFIX)$(NORMAL_WEBCORE_FRAMEWORKS_DIR)/WebCore.framework/Versions/A/Frameworks;
 INSTALL_PATH_USE_OVERRIDE_FRAMEWORKS_DIR_YES = $(WK_OVERRIDE_FRAMEWORKS_DIR);
-INSTALL_PATH_USE_ALTERNATE_FRAMEWORKS_DIR_YES = $(WK_ALTERNATE_FRAMEWORKS_DIR)/$(SYSTEM_LIBRARY_DIR)/PrivateFrameworks/WebCore.framework/Versions/A/Frameworks;
+INSTALL_PATH_USE_ALTERNATE_FRAMEWORKS_DIR_YES = $(INSTALL_PATH_PREFIX)$(WK_ALTERNATE_FRAMEWORKS_DIR)/$(SYSTEM_LIBRARY_DIR)/PrivateFrameworks/WebCore.framework/Versions/A/Frameworks;
 
 DYLIB_INSTALL_NAME_BASE[sdk=macosx*] = $(DYLIB_INSTALL_NAME_BASE_USE_ALTERNATE_FRAMEWORKS_DIR_$(WK_USE_ALTERNATE_FRAMEWORKS_DIR));
 DYLIB_INSTALL_NAME_BASE_USE_ALTERNATE_FRAMEWORKS_DIR_NO = $(DYLIB_INSTALL_NAME_BASE_WK_RELOCATABLE_FRAMEWORKS_$(WK_RELOCATABLE_FRAMEWORKS));