Fix blink side WebGL2 sync object related behaviors.

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.h

 // Copyright 2015 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 WebGL2RenderingContextBase_h
 #define WebGL2RenderingContextBase_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "modules/webgl/WebGLExtension.h"
 #include "modules/webgl/WebGLRenderingContextBase.h"
@@ skipping 640 matching lines @@
   GLboolean isSampler(WebGLSampler*);
   void bindSampler(GLuint, WebGLSampler*);
   void samplerParameteri(WebGLSampler*, GLenum, GLint);
   void samplerParameterf(WebGLSampler*, GLenum, GLfloat);
   ScriptValue getSamplerParameter(ScriptState*, WebGLSampler*, GLenum);
 
   /* Sync objects */
   WebGLSync* fenceSync(GLenum, GLbitfield);
   GLboolean isSync(WebGLSync*);
   void deleteSync(WebGLSync*);
-  GLenum clientWaitSync(WebGLSync*, GLbitfield, GLint64);
+  GLenum clientWaitSync(WebGLSync*, GLbitfield, GLuint64);
   void waitSync(WebGLSync*, GLbitfield, GLint64);
 
   ScriptValue getSyncParameter(ScriptState*, WebGLSync*, GLenum);
 
   /* Transform Feedback */
   WebGLTransformFeedback* createTransformFeedback();
   void deleteTransformFeedback(WebGLTransformFeedback*);
   GLboolean isTransformFeedback(WebGLTransformFeedback*);
   void bindTransformFeedback(GLenum, WebGLTransformFeedback*);
   void beginTransformFeedback(GLenum);
@@ skipping 233 matching lines @@
                   context,
                   context->is3d() &&
                       WebGLRenderingContextBase::getWebGLVersion(context) >= 2,
                   context.is3d() &&
                       WebGLRenderingContextBase::getWebGLVersion(&context) >=
                           2);
 
 }  // namespace blink
 
 #endif