Revert "Replaced blink sync points with new sync tokens."

third_party/WebKit/public/platform/WebGraphicsContext3D.h

 /*
  * Copyright (C) 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 130 matching lines @@
     // GL_CHROMIUM_setVisibility - Changes the visibility of the backbuffer
     virtual void setVisibilityCHROMIUM(bool visible) = 0;
 
     // GL_EXT_discard_framebuffer - makes specified attachments of currently bound framebuffer undefined.
     virtual void discardFramebufferEXT(WGC3Denum target, WGC3Dsizei numAttachments, const WGC3Denum* attachments) { }
 
     // GL_CHROMIUM_discard_backbuffer - controls allocation/deallocation of the back buffer.
     virtual void discardBackbufferCHROMIUM() { }
     virtual void ensureBackbufferCHROMIUM() { }
 
-    virtual WGC3Duint64 insertFenceSyncCHROMIUM() { return 0; }
-    virtual bool genSyncTokenCHROMIUM(WGC3Duint64, WGC3Dbyte*) { return false; }
-    virtual void waitSyncTokenCHROMIUM(const WGC3Dbyte*) {}
+    virtual bool insertSyncPoint(WGC3Dbyte*) { return false; }
+    virtual void waitSyncToken(const WGC3Dbyte*) {}
 
     // Copies the contents of the off-screen render target used by the WebGL
     // context to the corresponding texture used by the compositor.
     virtual void prepareTexture() = 0;
 
     // GL_CHROMIUM_post_sub_buffer - Copies part of the back buffer to the front buffer.
     virtual void postSubBufferCHROMIUM(int x, int y, int width, int height) = 0;
 
     // Synthesizes an OpenGL error which will be returned from a
     // later call to getError. This is used to emulate OpenGL ES
@@ skipping 384 matching lines @@
     virtual void vertexAttribI4iv(WGC3Duint index, const WGC3Dint *v) { }
     virtual void vertexAttribI4ui(WGC3Duint index, WGC3Duint x, WGC3Duint y, WGC3Duint z, WGC3Duint w) { }
     virtual void vertexAttribI4uiv(WGC3Duint index, const WGC3Duint *v) { }
     virtual void vertexAttribIPointer(WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dsizei stride, WGC3Dintptr pointer) { }
     virtual void waitSync(WGC3Dsync sync, WGC3Dbitfield flags, WGC3Duint64 timeout) { }
 };
 
 } // namespace blink
 
 #endif