Replace the use of an int32* with a proper struct for decoder configuration.

content/common/gpu/gpu_messages.h

Index: content/common/gpu/gpu_messages.h
diff --git a/content/common/gpu/gpu_messages.h b/content/common/gpu/gpu_messages.h
index 9d66de4ea43d7f6a6c48c6692bb93119d9a67382..f12016e365de463145fce151221612b30e38e851 100644
--- a/content/common/gpu/gpu_messages.h
+++ b/content/common/gpu/gpu_messages.h
@@ -17,6 +17,7 @@
 #include "gpu/ipc/gpu_command_buffer_traits.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
+#include "media/video/video_decode_accelerator.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 
@@ -104,6 +105,13 @@ IPC_STRUCT_TRAITS_END()
 IPC_ENUM_TRAITS(content::CauseForGpuLaunch)
 IPC_ENUM_TRAITS(gpu::error::ContextLostReason)
 
+IPC_ENUM_TRAITS(media::VideoDecodeAccelerator::Config::Format)
+IPC_ENUM_TRAITS(media::VideoDecodeAccelerator::Config::H264Profile)
+IPC_STRUCT_TRAITS_BEGIN(media::VideoDecodeAccelerator::Config)
+  IPC_STRUCT_TRAITS_MEMBER(format)
+  IPC_STRUCT_TRAITS_MEMBER(h264_profile)
+IPC_STRUCT_TRAITS_END()
+
 //------------------------------------------------------------------------------
 // GPU Messages
 // These are messages from the browser to the GPU process.
@@ -389,7 +397,7 @@ IPC_SYNC_MESSAGE_ROUTED1_2(GpuCommandBufferMsg_GetTransferBuffer,
 
 // Create and initialize a hardware video decoder, returning its new route_id.
 IPC_SYNC_MESSAGE_ROUTED1_1(GpuCommandBufferMsg_CreateVideoDecoder,
-                           std::vector<int32> /* configs */,
+                           media::VideoDecodeAccelerator::Config /* config */,
                            int /* route_id */)
 
 // Release all resources held by the named hardware video decoder.