Moves FrameHostMsg_SetCookie to a Mojo message

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index efeb1e3979d593c4af84b00c2c668e76c7af3bd9..2c5a5fddc96bddbc4cc7b8a8de2239fb06ad0c7d 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -1948,6 +1948,13 @@ RenderThreadImpl::GetPeerConnectionDependencyFactory() {
 }
 #endif
 
+mojom::RenderFrameMessageFilter*
+RenderThreadImpl::render_frame_message_filter() {
+  if (!render_frame_message_filter_)
+    GetChannel()->GetRemoteAssociatedInterface(&render_frame_message_filter_);
+  return render_frame_message_filter_.get();
+}
+
 gpu::GpuChannelHost* RenderThreadImpl::GetGpuChannel() {
   if (!gpu_channel_)
     return nullptr;