Support the Text services framework based IME for Chrome AURA on Windows.

ui/base/ime/win/tsf_bridge.cc

Index: ui/base/ime/win/tsf_bridge.cc
===================================================================
--- ui/base/ime/win/tsf_bridge.cc	(revision 193425)
+++ ui/base/ime/win/tsf_bridge.cc	(working copy)
@@ -44,6 +44,7 @@
                                 TextInputClient* client) OVERRIDE;
   virtual void RemoveFocusedClient(TextInputClient* client) OVERRIDE;
   virtual base::win::ScopedComPtr<ITfThreadMgr> GetThreadManager() OVERRIDE;
+  virtual TextInputClient* GetFocusedTextInputClient() const OVERRIDE;
 
  private:
   friend struct DefaultSingletonTraits<TSFBridgeDelegate>;
@@ -272,6 +273,10 @@
   }
 }
 
+TextInputClient* TSFBridgeDelegate::GetFocusedTextInputClient() const {
+  return client_;
+}
+
 base::win::ScopedComPtr<ITfThreadMgr> TSFBridgeDelegate::GetThreadManager() {
   DCHECK_EQ(MessageLoop::TYPE_UI, MessageLoop::current()->type());
   DCHECK(IsInitialized());