[ScreenOrientation] De-associate device.mojom.ScreenOrientation from legacy IPC channel.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 264c934af1782382c8593f714d7f9529d2fcca55..2bb08c63986be4436604f1d7c8a459af594798ee 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -135,7 +135,6 @@
 #include "content/renderer/renderer_webapplicationcachehost_impl.h"
 #include "content/renderer/renderer_webcolorchooser_impl.h"
 #include "content/renderer/savable_resources.h"
-#include "content/renderer/screen_orientation/screen_orientation_dispatcher.h"
 #include "content/renderer/shared_worker/shared_worker_repository.h"
 #include "content/renderer/shared_worker/websharedworker_proxy.h"
 #include "content/renderer/skia_benchmarking_extension.h"
@@ -1079,7 +1078,6 @@ RenderFrameImpl::RenderFrameImpl(const CreateParams& params)
       devtools_agent_(nullptr),
       push_messaging_dispatcher_(NULL),
       presentation_dispatcher_(NULL),
-      screen_orientation_dispatcher_(NULL),
       manifest_manager_(NULL),
       accessibility_mode_(AccessibilityModeOff),
       render_accessibility_(NULL),
@@ -4642,13 +4640,6 @@ bool RenderFrameImpl::allowWebGL(bool default_value) {
   return !blocked;
 }
 
-blink::WebScreenOrientationClient*
-    RenderFrameImpl::webScreenOrientationClient() {
-  if (!screen_orientation_dispatcher_)
-    screen_orientation_dispatcher_ = new ScreenOrientationDispatcher(this);
-  return screen_orientation_dispatcher_;
-}
-
 bool RenderFrameImpl::isControlledByServiceWorker(WebDataSource& data_source) {
   ServiceWorkerNetworkProvider* provider =
       ServiceWorkerNetworkProvider::FromDocumentState(