FBTF: Move individual XXXMsg_Params structs to a new file.

chrome/common/gpu_messages_internal.h

Index: chrome/common/gpu_messages_internal.h
diff --git a/chrome/common/gpu_messages_internal.h b/chrome/common/gpu_messages_internal.h
index 9ada32a4d4d93813d454ff2279cff311aeaaa6c4..7db08d3c619ca89b7c47af6ea11e1217dff7df31 100644
--- a/chrome/common/gpu_messages_internal.h
+++ b/chrome/common/gpu_messages_internal.h
@@ -9,12 +9,19 @@
 // This file needs to be included again, even though we're actually included
 // from it via utility_messages.h.
 #include "base/shared_memory.h"
-#include "chrome/common/gpu_info.h"
 #include "chrome/common/gpu_video_common.h"
-#include "gfx/size.h"
-#include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
 
+namespace gfx {
+class Size;
+}
+
+namespace IPC {
+struct ChannelHandle;
+}
+
+class GPUInfo;
+
 //------------------------------------------------------------------------------
 // GPU Messages
 // These are messages from the browser to the GPU process.