Mojo-ify implementation of screen orientation locking/unlocking.

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 35b472ad167ac9eeff39a1eae3a9638b2fdd528b..7b56c19669688446399be06637b79bb9eaa8cf22 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1188,6 +1188,11 @@ RenderFrameImpl::~RenderFrameImpl() {
   render_view_->UnregisterRenderFrame(this);
   g_routing_id_frame_map.Get().erase(routing_id_);
   RenderThread::Get()->RemoveRoute(routing_id_);
+
+  if (screen_orientation_dispatcher_) {

[blundell, 2016/10/25 16:09:27]

why this added code?

[lunalu1, 2016/11/03 23:15:25]

Done.

+    delete screen_orientation_dispatcher_;
+    screen_orientation_dispatcher_ = nullptr;
+  }
 }
 
 void RenderFrameImpl::BindToWebFrame(blink::WebLocalFrame* web_frame) {