diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index f791f8b..43f84cd 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,21 @@
+2019-12-04  Kenneth Russell  <kbr@chromium.org>
+
+        Enable WebGL's ASTC extension all the time
+        https://bugs.webkit.org/show_bug.cgi?id=202836
+        <rdar://problem/57627592>
+
+        Reviewed by Dean Jackson.
+
+        Remove the run-time flag - no longer necessary.
+
+        * html/canvas/WebGLCompressedTextureASTC.cpp:
+        (WebCore::WebGLCompressedTextureASTC::supported):
+        * html/canvas/WebGLRenderingContextBase.cpp:
+        (WebCore::WebGLRenderingContextBase::extensionIsEnabled):
+        * page/RuntimeEnabledFeatures.h:
+        (WebCore::RuntimeEnabledFeatures::setWebGLCompressedTextureASTCSupportEnabled): Deleted.
+        (WebCore::RuntimeEnabledFeatures::webGLCompressedTextureASTCSupportEnabled const): Deleted.
+
 2019-12-04  Antti Koivisto  <antti@apple.com>
 
         [LFC][Integration] Paint with TextPainter
diff --git a/Source/WebCore/html/canvas/WebGLCompressedTextureASTC.cpp b/Source/WebCore/html/canvas/WebGLCompressedTextureASTC.cpp
index 30dc449..132f3e6 100644
--- a/Source/WebCore/html/canvas/WebGLCompressedTextureASTC.cpp
+++ b/Source/WebCore/html/canvas/WebGLCompressedTextureASTC.cpp
@@ -94,9 +94,8 @@
 
 bool WebGLCompressedTextureASTC::supported(const WebGLRenderingContextBase& context)
 {
-    return RuntimeEnabledFeatures::sharedFeatures().webGLCompressedTextureASTCSupportEnabled()
-        && (context.graphicsContext3D()->getExtensions().supports("GL_KHR_texture_compression_astc_hdr"_s)
-        || context.graphicsContext3D()->getExtensions().supports("GL_KHR_texture_compression_astc_ldr"_s));
+    return context.graphicsContext3D()->getExtensions().supports("GL_KHR_texture_compression_astc_hdr"_s)
+        || context.graphicsContext3D()->getExtensions().supports("GL_KHR_texture_compression_astc_ldr"_s);
 }
 
 } // namespace WebCore
diff --git a/Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp b/Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp
index 53a1f2029..939abb8 100644
--- a/Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp
+++ b/Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp
@@ -3088,10 +3088,10 @@
     CHECK_EXTENSION(m_webglLoseContext, "WEBGL_lose_context");
     CHECK_EXTENSION(m_webglDebugRendererInfo, "WEBGL_debug_renderer_info");
     CHECK_EXTENSION(m_webglDebugShaders, "WEBGL_debug_shaders");
-    CHECK_EXTENSION(m_webglCompressedTextureASTC, "WEBKIT_WEBGL_compressed_texture_astc");
+    CHECK_EXTENSION(m_webglCompressedTextureASTC, "WEBGL_compressed_texture_astc");
     CHECK_EXTENSION(m_webglCompressedTextureATC, "WEBKIT_WEBGL_compressed_texture_atc");
-    CHECK_EXTENSION(m_webglCompressedTextureETC, "WEBKIT_WEBGL_compressed_texture_etc");
-    CHECK_EXTENSION(m_webglCompressedTextureETC1, "WEBKIT_WEBGL_compressed_texture_etc1");
+    CHECK_EXTENSION(m_webglCompressedTextureETC, "WEBGL_compressed_texture_etc");
+    CHECK_EXTENSION(m_webglCompressedTextureETC1, "WEBGL_compressed_texture_etc1");
     CHECK_EXTENSION(m_webglCompressedTexturePVRTC, "WEBKIT_WEBGL_compressed_texture_pvrtc");
     CHECK_EXTENSION(m_webglCompressedTextureS3TC, "WEBGL_compressed_texture_s3tc");
     CHECK_EXTENSION(m_webglDepthTexture, "WEBGL_depth_texture");
diff --git a/Source/WebCore/page/RuntimeEnabledFeatures.h b/Source/WebCore/page/RuntimeEnabledFeatures.h
index 25f6e363..49091ba 100644
--- a/Source/WebCore/page/RuntimeEnabledFeatures.h
+++ b/Source/WebCore/page/RuntimeEnabledFeatures.h
@@ -161,9 +161,6 @@
     void setCrossOriginResourcePolicyEnabled(bool isEnabled) { m_crossOriginResourcePolicyEnabled = isEnabled; }
     bool crossOriginResourcePolicyEnabled() const { return m_crossOriginResourcePolicyEnabled; }
 
-    void setWebGLCompressedTextureASTCSupportEnabled(bool isEnabled) { m_isWebGLCompressedTextureASTCSupportEnabled = isEnabled; }
-    bool webGLCompressedTextureASTCSupportEnabled() const { return m_isWebGLCompressedTextureASTCSupportEnabled; }
-
     void setServerTimingEnabled(bool isEnabled) { m_isServerTimingEnabled = isEnabled; }
     bool serverTimingEnabled() const { return m_isServerTimingEnabled; }
 
@@ -437,7 +434,6 @@
     bool m_itpDebugMode { false };
     bool m_isRestrictedHTTPResponseAccess { true };
     bool m_crossOriginResourcePolicyEnabled { true };
-    bool m_isWebGLCompressedTextureASTCSupportEnabled { false };
     bool m_isServerTimingEnabled { false };
     bool m_experimentalPlugInSandboxProfilesEnabled { false };
     bool m_disabledAdaptationsMetaTagEnabled { false };
diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
index 39d69e4..17f4f51 100644
--- a/Source/WebKit/ChangeLog
+++ b/Source/WebKit/ChangeLog
@@ -1,3 +1,15 @@
+2019-12-04  Kenneth Russell  <kbr@chromium.org>
+
+        Enable WebGL's ASTC extension all the time
+        https://bugs.webkit.org/show_bug.cgi?id=202836
+        <rdar://problem/57627592>
+
+        Reviewed by Dean Jackson.
+
+        Remove the run-time flag - no longer necessary.
+
+        * Shared/WebPreferences.yaml:
+
 2019-12-04  youenn fablet  <youenn@apple.com>
 
         WebProcessPool::terminateServiceWorkerProcess should be renamed terminateServiceWorkers
diff --git a/Source/WebKit/Shared/WebPreferences.yaml b/Source/WebKit/Shared/WebPreferences.yaml
index c6ef83e..c53d664 100644
--- a/Source/WebKit/Shared/WebPreferences.yaml
+++ b/Source/WebKit/Shared/WebPreferences.yaml
@@ -1552,14 +1552,6 @@
   condition: ENABLE(OVERFLOW_SCROLLING_TOUCH)
   category: internal
 
-WebGLCompressedTextureASTCSupportEnabled:
-  type: bool
-  defaultValue: false
-  humanReadableName: "ASTC Texture Support"
-  humanReadableDescription: "Support for ASTC compressed texture formats in WebGL"
-  category: internal
-  webcoreBinding: RuntimeEnabledFeatures
-
 FullScreenEnabled:
   type: bool
   defaultValue: false