[GPU] Get GPU process running on the mac...

gpu/command_buffer/common/cmd_buffer_common.h

 // Copyright (c) 2009 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 contains the common parts of command buffer formats.
 
 #ifndef GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_
 #define GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 // Rounds up to a multiple of entries in bytes.
 inline size_t RoundSizeToMultipleOfEntries(size_t size_in_bytes) {
   return ComputeNumEntries(size_in_bytes) * sizeof(uint32);  // NOLINT
 }
 
 // Struct that defines the command header in the command buffer.
 struct CommandHeader {
   Uint32 size:21;
   Uint32 command:11;
 
-  static const int32 kMaxSize;
+  static const int32 kMaxSize = (1 << 21) - 1;
 
   void Init(uint32 _command, int32 _size) {
     DCHECK_LE(_size, kMaxSize);
     command = _command;
     size = _size;
   }
 
   // Sets the header based on the passed in command. Can not be used for
   // variable sized commands like immediate commands or Noop.
   template <typename T>
@@ skipping 589 matching lines @@
                Offsetof_GetBucketData_shared_memory_offset_not_20);
 
 }  // namespace cmd
 
 #pragma pack(pop)
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_CMD_BUFFER_COMMON_H_