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 fef256ab44ae835801a49a7b377a8c7420bd7ba0..65c494cfe0be84ebd32152e33e58b262ea54b858 100644
--- a/components/html_viewer/html_frame.h
+++ b/components/html_viewer/html_frame.h
@@ -194,6 +194,12 @@ class HTMLFrame : public blink::WebFrameClient,
   virtual void didReceiveTitle(blink::WebLocalFrame* frame,
                                const blink::WebString& title,
                                blink::WebTextDirection direction);
+  virtual void reportFindInFrameMatchCount(int identifier,
+                                           int count,
+                                           bool finalUpdate);
+  virtual void reportFindInPageSelection(int identifier,
+                                         int activeMatchOrdinal,
+                                         const blink::WebRect& selection);
 
  private:
   friend class HTMLFrameTreeManager;
@@ -244,6 +250,8 @@ class HTMLFrame : public blink::WebFrameClient,
 
   GlobalState* global_state() { return frame_tree_manager_->global_state(); }
 
+  blink::WebElement GetFocusedElement();

[sky, 2015/10/05 15:55:08]

This should document it returns the focused element only if this frame has
focus.

+
   // Returns the Frame associated with the specified WebFrame.
   HTMLFrame* FindFrameWithWebFrame(blink::WebFrame* web_frame);
 
@@ -280,6 +288,14 @@ 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 Find(int32 request_id,
+            const mojo::String& search_text,
+            const FindCallback& callback) override;
+  void StopFinding(bool clear_selection) override;
+  void ScopeStringMatches(int32_t request_id,
+                          const mojo::String& search_test,
+                          bool reset) override;
+  void CancelPendingScopingEffort() override;
 
   // blink::WebRemoteFrameClient:
   virtual void frameDetached(blink::WebRemoteFrameClient::DetachType type);