Make command buffer commands and immediate data volatile

gpu/command_buffer/service/common_decoder_unittest.cc

 // 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.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "gpu/command_buffer/service/cmd_buffer_engine.h"
@@ skipping 45 matching lines @@
 class TestCommonDecoder : public CommonDecoder {
  public:
   // Overridden from AsyncAPIInterface
   const char* GetCommandName(unsigned int command_id) const override {
     return GetCommonCommandName(static_cast<cmd::CommandId>(command_id));
   }
 
   // Overridden from AsyncAPIInterface
   error::Error DoCommand(unsigned int command,
                          unsigned int arg_count,
-                         const void* cmd_data) override {
+                         const volatile void* cmd_data) override {
     return DoCommonCommand(command, arg_count, cmd_data);
   }
 
   CommonDecoder::Bucket* GetBucket(uint32_t id) const {
     return CommonDecoder::GetBucket(id);
   }
 };
 
 class MockCommandBufferEngine : public CommandBufferEngine {
  public:
@@ skipping 426 matching lines @@
            MockCommandBufferEngine::kValidShmId, kSomeOffsetInSharedMemory);
   EXPECT_NE(error::kNoError, ExecuteCmd(cmd));
 
   // Check that it fails if the size is invalid
   cmd.Init(kBucketId, 0, sizeof(kData) + 1,
            MockCommandBufferEngine::kValidShmId, kSomeOffsetInSharedMemory);
   EXPECT_NE(error::kNoError, ExecuteCmd(cmd));
 }
 
 }  // namespace gpu