gpu: Reuse transfer buffers more aggresively

gpu/command_buffer/client/gles2_implementation_autogen.h

 // Copyright (c) 2014 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 678 matching lines @@
                                      GLint internalformat,
                                      GLsizei width,
                                      GLsizei height,
                                      GLint border,
                                      GLenum format,
                                      GLenum type,
                                      const void* pixels) OVERRIDE;
 
 virtual void WaitAsyncTexImage2DCHROMIUM(GLenum target) OVERRIDE;
 
+virtual void WaitAllAsyncTexImage2DCHROMIUM() OVERRIDE;
+
 virtual void DiscardFramebufferEXT(GLenum target,
                                    GLsizei count,
                                    const GLenum* attachments) OVERRIDE;
 
 virtual void LoseContextCHROMIUM(GLenum current, GLenum other) OVERRIDE;
 
 virtual GLuint InsertSyncPointCHROMIUM() OVERRIDE;
 
 virtual void WaitSyncPointCHROMIUM(GLuint sync_point) OVERRIDE;
 
 virtual void DrawBuffersEXT(GLsizei count, const GLenum* bufs) OVERRIDE;
 
 virtual void DiscardBackbufferCHROMIUM() OVERRIDE;
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_