Move ViewHostMsg_GenerateRoutingID to mojom

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 7c267b35fa6afcdd8e0997e16bafbd8f9635900c..09d716986497a07756e1691b4c47af983b16604d 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -1104,8 +1104,8 @@ mojom::StoragePartitionService* RenderThreadImpl::GetStoragePartitionService() {
 }
 
 int RenderThreadImpl::GenerateRoutingID() {
-  int routing_id = MSG_ROUTING_NONE;
-  Send(new ViewHostMsg_GenerateRoutingID(&routing_id));
+  int32_t routing_id = MSG_ROUTING_NONE;
+  render_message_filter()->GenerateRoutingID(&routing_id);
   return routing_id;
 }
 
@@ -1998,6 +1998,12 @@ RenderThreadImpl::render_frame_message_filter() {
   return render_frame_message_filter_.get();
 }
 
+mojom::RenderMessageFilter* RenderThreadImpl::render_message_filter() {
+  if (!render_message_filter_)
+    GetChannel()->GetRemoteAssociatedInterface(&render_message_filter_);
+  return render_message_filter_.get();
+}
+
 gpu::GpuChannelHost* RenderThreadImpl::GetGpuChannel() {
   if (!gpu_channel_)
     return nullptr;