Update from https://crrev.com/317530

gpu/command_buffer/client/gles2_implementation_autogen.h

Index: gpu/command_buffer/client/gles2_implementation_autogen.h
diff --git a/gpu/command_buffer/client/gles2_implementation_autogen.h b/gpu/command_buffer/client/gles2_implementation_autogen.h
index 9d2d8eb7a3c15bc76d592c8ac3ee3a38fba3462a..5c994e36d41d13aa383f194e76819b9045cfc4b3 100644
--- a/gpu/command_buffer/client/gles2_implementation_autogen.h
+++ b/gpu/command_buffer/client/gles2_implementation_autogen.h
@@ -97,6 +97,8 @@ void ClearDepthf(GLclampf depth) override;
 
 void ClearStencil(GLint s) override;
 
+GLenum ClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) override;
+
 void ColorMask(GLboolean red,
                GLboolean green,
                GLboolean blue,
@@ -702,6 +704,8 @@ void VertexAttribPointer(GLuint indx,
 
 void Viewport(GLint x, GLint y, GLsizei width, GLsizei height) override;
 
+void WaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) override;
+
 void BlitFramebufferCHROMIUM(GLint srcX0,
                              GLint srcY0,
                              GLint srcX1,