Defered collect DirectX diagnostics until they are needed for about:gpu....

chrome/common/gpu_messages_internal.h

 // Copyright (c) 2010 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 <vector>
 #include <string>
 
 #include "base/shared_memory.h"
+#include "chrome/common/gpu_info.h"
 #include "chrome/common/gpu_video_common.h"
 #include "ipc/ipc_message_macros.h"
 
 #define IPC_MESSAGE_START GpuMsgStart
 
 namespace gfx {
 class Size;
 }
 
 namespace IPC {
@@ skipping 29 matching lines @@
 
 // Provides a synchronization point to guarantee that the processing of
 // previous asynchronous messages (i.e., GpuMsg_EstablishChannel) has
 // completed. (This message can't be synchronous because the
 // GpuProcessHost uses an IPC::ChannelProxy, which sends all messages
 // asynchronously.) Results in a GpuHostMsg_SynchronizeReply.
 IPC_MESSAGE_CONTROL0(GpuMsg_Synchronize)
 
 // Tells the GPU process to create a context for collecting graphics card
 // information.
-IPC_MESSAGE_CONTROL0(GpuMsg_CollectGraphicsInfo)
+IPC_MESSAGE_CONTROL1(GpuMsg_CollectGraphicsInfo,
+                     GPUInfo::Level /* level */)
 
 #if defined(OS_MACOSX)
 // Tells the GPU process that the browser process handled the swap
 // buffers request with the given number. Note that it is possible
 // for the browser process to coalesce frames; it is not guaranteed
 // that every GpuHostMsg_AcceleratedSurfaceBuffersSwapped message
 // will result in a buffer swap on the browser side.
 IPC_MESSAGE_CONTROL3(GpuMsg_AcceleratedSurfaceBuffersSwappedACK,
                      int /* renderer_id */,
                      int32 /* route_id */,
@@ skipping 267 matching lines @@
 // Release all video frames allocated for a hardware video decoder.
 IPC_MESSAGE_ROUTED0(GpuVideoDecoderHostMsg_ReleaseAllVideoFrames)
 
 // GpuVideoDecoder report output format change.
 IPC_MESSAGE_ROUTED1(GpuVideoDecoderHostMsg_MediaFormatChange,
                     GpuVideoDecoderFormatChangeParam)
 
 // GpuVideoDecoder report error.
 IPC_MESSAGE_ROUTED1(GpuVideoDecoderHostMsg_ErrorNotification,
                     GpuVideoDecoderErrorInfoParam)