[WIP] Add Chromium-side support for the Screen Orientation API

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 69b342ba197606502b9ed2eca6f7ce110a8b7b9d..861cc3acf0d666fb2207338573b5ceac9439dbc3 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -94,6 +94,7 @@
 #include "content/browser/renderer_host/text_input_client_message_filter.h"
 #include "content/browser/renderer_host/websocket_dispatcher_host.h"
 #include "content/browser/resolve_proxy_msg_helper.h"
+#include "content/browser/screen_orientation/screen_orientation_dispatcher_host.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/browser/service_worker/service_worker_dispatcher_host.h"
 #include "content/browser/speech/input_tag_speech_dispatcher_host.h"
@@ -784,6 +785,7 @@ void RenderProcessHostImpl::CreateMessageFilters() {
     AddFilter(new MemoryBenchmarkMessageFilter());
 #endif
   AddFilter(new VibrationMessageFilter());
+  AddFilter(new ScreenOrientationDispatcherHost());
 }
 
 int RenderProcessHostImpl::GetNextRoutingID() {