Exposes OrientationChangeEvent.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 841f41c6d1d1c1a6f5dbfbc66325f7ad63d443eb..7510c5a11bac2cf5928f5759c2eacd25c7ce4f8d 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -841,6 +841,8 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
                         OnDisableScrollbarsForSmallWindows)
     IPC_MESSAGE_HANDLER(ViewMsg_SetRendererPrefs, OnSetRendererPrefs)
     IPC_MESSAGE_HANDLER(ViewMsg_MediaPlayerActionAt, OnMediaPlayerActionAt)
+    IPC_MESSAGE_HANDLER(ViewMsg_OrientationChangeEvent,
+                        OnOrientationChangeEvent)
     IPC_MESSAGE_HANDLER(ViewMsg_PluginActionAt, OnPluginActionAt)
     IPC_MESSAGE_HANDLER(ViewMsg_SetActive, OnSetActive)
     IPC_MESSAGE_HANDLER(ViewMsg_SetNavigationStartTime,
@@ -4419,6 +4421,10 @@ void RenderViewImpl::OnMediaPlayerActionAt(const gfx::Point& location,
     webview()->performMediaPlayerAction(action, location);
 }
 
+void RenderViewImpl::OnOrientationChangeEvent(int orientation) {
+  webview()->mainFrame()->sendOrientationChangeEvent(orientation);
+}
+
 void RenderViewImpl::OnPluginActionAt(const gfx::Point& location,
                                       const WebPluginAction& action) {
   if (webview())