Move establish_channel_params.{cc|h} to content/gpu

content/gpu/gpu_child_thread.h

Index: content/gpu/gpu_child_thread.h
diff --git a/content/gpu/gpu_child_thread.h b/content/gpu/gpu_child_thread.h
index 31daaeb8a4bfcfe024684c2624a8ba80da3fa7f3..111dbf5b0b0cb470e230471b222e7e8030d545c9 100644
--- a/content/gpu/gpu_child_thread.h
+++ b/content/gpu/gpu_child_thread.h
@@ -42,6 +42,7 @@ class GpuMemoryBufferFactory;
 class GpuProcessControlImpl;
 class GpuWatchdogThread;
 class MediaService;
+struct EstablishChannelParams;
 
 // The main thread of the GPU child process. There will only ever be one of
 // these per process. It does process initialization and shutdown. It forwards