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

content/renderer/gpu/gpu_channel_host.h

Index: content/renderer/gpu/gpu_channel_host.h
diff --git a/content/renderer/gpu/gpu_channel_host.h b/content/renderer/gpu/gpu_channel_host.h
index 44065bb14218f9bec211b9bde42673764e5a9d71..a1c5907e65d1b50eb0fad22b6b2e3859a6afabc5 100644
--- a/content/renderer/gpu/gpu_channel_host.h
+++ b/content/renderer/gpu/gpu_channel_host.h
@@ -95,7 +95,7 @@ class GpuChannelHost : public IPC::Message::Sender,
   // Returned pointer is owned by the CommandBufferProxy for |route_id|.
   GpuVideoDecodeAcceleratorHost* CreateVideoDecoder(
       int command_buffer_route_id,
-      const std::vector<int32>& configs,
+      const media::VideoDecodeAccelerator::Config& config,
       media::VideoDecodeAccelerator::Client* client);
 
   // Destroy a command buffer created by this channel.