Browser Side Text Input State Tracking for OOPIF.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 384bdd307a89a215f2b7c2fa10f1f6939e7a1126..633a152fee49d748e4afb2462346d69cd15e684d 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -607,6 +607,9 @@ class CONTENT_EXPORT WebContentsImpl
                               const std::vector<uint8_t>& proto) override;
   void OnRenderFrameProxyVisibilityChanged(bool visible) override;
   void SendScreenRects() override;
+  const TextInputState* GetTextInputState() override;
+  void UpdateTextInputState(RenderWidgetHostViewBase* rwhv,
+                            bool text_input_state_changed) override;
 
   // RenderFrameHostManager::Delegate ------------------------------------------
 
@@ -1324,6 +1327,13 @@ class CONTENT_EXPORT WebContentsImpl
 
   bool page_scale_factor_is_one_;
 
+  // The RWHV which is currently focused.
+  base::WeakPtr<RenderWidgetHostViewBase> view_with_active_text_input_;
+
+  // A copy of the text input state from |view_with_active_text_input_| when
+  // there exists one, or empty (type == ui::TEXT_INPUT_TYPE_NONE) if otherwise.
+  scoped_ptr<TextInputState> text_input_state_;
+
   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
   base::WeakPtrFactory<WebContentsImpl> weak_factory_;