Implement Input Method related WebPlugin interface for browser plugin

content/browser/browser_plugin/test_browser_plugin_guest.h

Index: content/browser/browser_plugin/test_browser_plugin_guest.h
diff --git a/content/browser/browser_plugin/test_browser_plugin_guest.h b/content/browser/browser_plugin/test_browser_plugin_guest.h
index a66e86b26c49ee5966f4f95ece895398b02a4175..1ef7f0dbecfe29eba96901144d1b722368fd2e24 100644
--- a/content/browser/browser_plugin/test_browser_plugin_guest.h
+++ b/content/browser/browser_plugin/test_browser_plugin_guest.h
@@ -37,6 +37,7 @@ class TestBrowserPluginGuest : public BrowserPluginGuest {
   virtual void SetDamageBuffer(
       const BrowserPluginHostMsg_ResizeGuest_Params& params) OVERRIDE;
   virtual void DidStopLoading(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void OnImeCancelComposition() OVERRIDE;
 
   // Overridden from WebContentsObserver.
   virtual void WasHidden() OVERRIDE;
@@ -64,6 +65,8 @@ class TestBrowserPluginGuest : public BrowserPluginGuest {
   void WaitForLoadStop();
   // Waits until UpdateRect with a particular |view_size| is observed.
   void WaitForViewSize(const gfx::Size& view_size);
+  // Waits until IME cancellation is observed.
+  void WaitForImeCancel();
 
   void set_guest_hang_timeout(const base::TimeDelta& timeout) {
     guest_hang_timeout_ = timeout;
@@ -83,6 +86,7 @@ class TestBrowserPluginGuest : public BrowserPluginGuest {
   bool set_damage_buffer_observed_;
   bool input_observed_;
   bool load_stop_observed_;
+  bool ime_cancel_observed_;
   gfx::Size last_view_size_observed_;
   gfx::Size expected_auto_view_size_;
 
@@ -101,6 +105,7 @@ class TestBrowserPluginGuest : public BrowserPluginGuest {
   scoped_refptr<MessageLoopRunner> input_message_loop_runner_;
   scoped_refptr<MessageLoopRunner> load_stop_message_loop_runner_;
   scoped_refptr<MessageLoopRunner> auto_view_size_message_loop_runner_;
+  scoped_refptr<MessageLoopRunner> ime_cancel_message_loop_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(TestBrowserPluginGuest);
 };