mandoline: Add find in page.

components/html_viewer/html_frame.h

Index: components/html_viewer/html_frame.h
diff --git a/components/html_viewer/html_frame.h b/components/html_viewer/html_frame.h
index 4f7de6ca4da92227f741423ccc40be372bdc2a2c..8e99147a29cf891f8c5495d1169c872c100089e3 100644
--- a/components/html_viewer/html_frame.h
+++ b/components/html_viewer/html_frame.h
@@ -127,6 +127,7 @@ class HTMLFrame : public blink::WebFrameClient,
   // Returns the WebView for this frame, or null if there isn't one. The root
   // has a WebView, the children WebFrameWidgets.
   blink::WebView* web_view();
+  blink::WebView* web_view() const;
   blink::WebWidget* GetWebWidget();
 
   // The mus::View this frame renders to. This is non-null for the local frame
@@ -190,6 +191,12 @@ class HTMLFrame : public blink::WebFrameClient,
   virtual void didReceiveTitle(blink::WebLocalFrame* frame,
                                const blink::WebString& title,
                                blink::WebTextDirection direction);
+  virtual void reportFindInPageMatchCount(int identifier,
+                                          int count,
+                                          bool finalUpdate);
+  virtual void reportFindInPageSelection(int identifier,
+                                         int activeMatchOrdinal,
+                                         const blink::WebRect& selection);
 
  private:
   friend class HTMLFrameTreeManager;
@@ -240,6 +247,8 @@ class HTMLFrame : public blink::WebFrameClient,
 
   GlobalState* global_state() { return frame_tree_manager_->global_state(); }
 
+  blink::WebElement GetFocusedElement() const;
+
   // Returns the Frame associated with the specified WebFrame.
   HTMLFrame* FindFrameWithWebFrame(blink::WebFrame* web_frame);
 
@@ -276,6 +285,8 @@ class HTMLFrame : public blink::WebFrameClient,
                       const OnWillNavigateCallback& callback) override;
   void OnFrameLoadingStateChanged(uint32_t frame_id, bool loading) override;
   void OnDispatchFrameLoadEvent(uint32_t frame_id) override;
+  void OnFind(int32 request_id, const mojo::String& search_text) override;
+  void OnStopFinding() override;
 
   // blink::WebRemoteFrameClient:
   virtual void frameDetached(blink::WebRemoteFrameClient::DetachType type);