Pull in various gpu/command_buffer fixes from chromium

gpu/command_buffer/common/gles2_cmd_format.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.
 
 // This file defines the GLES2 command buffer commands.
 
 #ifndef GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 #define GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 
 
@@ skipping 25 matching lines @@
 typedef unsigned short GLushort;
 typedef unsigned long GLulong;
 typedef float GLfloat;
 typedef float GLclampf;
 typedef double GLdouble;
 typedef double GLclampd;
 typedef void GLvoid;
 typedef khronos_intptr_t GLintptr;
 typedef khronos_ssize_t  GLsizeiptr;
 typedef struct __GLsync *GLsync;
+typedef int64_t GLint64;
 typedef uint64_t GLuint64;
 
 namespace gpu {
 namespace gles2 {
 
 // Command buffer is GPU_COMMAND_BUFFER_ENTRY_ALIGNMENT byte aligned.
 #pragma pack(push, GPU_COMMAND_BUFFER_ENTRY_ALIGNMENT)
 
 namespace id_namespaces {
 
@@ skipping 300 matching lines @@
     "offset of CreateAndConsumeTextureCHROMIUMImmediate.client_id should be 8");
 
 
 #pragma pack(pop)
 
 }  // namespace cmd
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_