Completely removed the Extensions3D class (Take 2)

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index ee297fc13c2d956e3413dddd5bf8e2c7b991c06e..6f11128b2fc20500f393a2bac23b55a5f188b016 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -122,6 +122,7 @@
 #include "platform/graphics/filters/FilterOperations.h"
 #include "platform/graphics/gpu/SharedGraphicsContext3D.h"
 #include "platform/weborigin/SchemeRegistry.h"
+#include "public/platform/WebGraphicsContext3D.h"
 #include "public/platform/WebLayer.h"
 #include "wtf/InstanceCounter.h"
 #include "wtf/dtoa.h"
@@ -2332,7 +2333,7 @@ bool Internals::loseSharedGraphicsContext3D()
     RefPtr<GraphicsContext3D> sharedContext = SharedGraphicsContext3D::get();
     if (!sharedContext)
         return false;
-    sharedContext->extensions()->loseContextCHROMIUM(Extensions3D::GUILTY_CONTEXT_RESET_ARB, Extensions3D::INNOCENT_CONTEXT_RESET_ARB);
+    sharedContext->webContext()->loseContextCHROMIUM(GL_GUILTY_CONTEXT_RESET_EXT, GL_INNOCENT_CONTEXT_RESET_EXT);
     // To prevent tests that call loseSharedGraphicsContext3D from being
     // flaky, we call finish so that the context is guaranteed to be lost
     // synchronously (i.e. before returning).