Create Mojo service for locking/unlocking screen orientation.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 09d1f1198bc983d993fdb14b44645f0cfb03ec1f..63fd7a6d3df767746add5c77c6a9623963598133 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -32,6 +32,7 @@
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
+#include "content/browser/screen_orientation/screen_orientation_service_impl.h"
 #include "content/browser/transition_request_manager.h"
 #include "content/common/accessibility_messages.h"
 #include "content/common/desktop_notification_messages.h"
@@ -188,6 +189,10 @@ RenderFrameHostImpl::RenderFrameHostImpl(RenderViewHostImpl* render_view_host,
       this));
 
   if (GetProcess()->GetServiceRegistry()) {
+    GetServiceRegistry()->AddService<ScreenOrientationService>(

[qsr, 2014/09/22 13:01:48]

You might want to extract this into a registration method, as more AddService
will come.

+        base::Bind(&ScreenOrientationServiceImpl::Create,
+                   base::Unretained(delegate_->GetAsWebContents())));
+
     RenderFrameSetupPtr setup;
     GetProcess()->GetServiceRegistry()->ConnectToRemoteService(&setup);
     mojo::ServiceProviderPtr service_provider;