Remove genSyncTokenCHROMIUM from WebGraphicsContext3D.

gpu/blink/webgraphicscontext3d_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GPU_BLINK_WEBGRAPHICSCONTEXT3D_IMPL_H_
 #define GPU_BLINK_WEBGRAPHICSCONTEXT3D_IMPL_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 19 matching lines @@
 class WebGraphicsContext3DErrorMessageCallback;
 
 class GPU_BLINK_EXPORT WebGraphicsContext3DImpl
     : public NON_EXPORTED_BASE(blink::WebGraphicsContext3D) {
  public:
   ~WebGraphicsContext3DImpl() override;
 
   //----------------------------------------------------------------------
   // WebGraphicsContext3D methods
 
-  bool genSyncTokenCHROMIUM(blink::WGC3Duint64 fenceSync,
-                            blink::WGC3Dbyte* syncToken) override;
-
   void drawElements(blink::WGC3Denum mode,
                     blink::WGC3Dsizei count,
                     blink::WGC3Denum type,
                     blink::WGC3Dintptr offset) override;
 
   bool getActiveAttrib(blink::WebGLId program,
                        blink::WGC3Duint index,
                        ActiveInfo&) override;
   bool getActiveUniform(blink::WebGLId program,
                         blink::WGC3Duint index,
@@ skipping 277 matching lines @@
   // Errors raised by synthesizeGLError().
   std::vector<blink::WGC3Denum> synthetic_errors_;
 
   ::gpu::gles2::GLES2Interface* gl_;
   bool lose_context_when_out_of_memory_;
 };
 
 }  // namespace gpu_blink
 
 #endif  // GPU_BLINK_WEBGRAPHICSCONTEXT3D_IMPL_H_