[autofill] Show autofill suggestions on tap gesture.

components/autofill/renderer/page_click_tracker.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_AUTOFILL_RENDERER_PAGE_CLICK_TRACKER_H_
 #define COMPONENTS_AUTOFILL_RENDERER_PAGE_CLICK_TRACKER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
+#include "components/autofill/renderer/page_click_listener.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMEventListener.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
 
 namespace autofill {
 
 class PageClickListener;
 
 // This class is responsible for tracking clicks on elements in web pages and
 // notifiying the associated listener when a node is clicked.
 // Compared to a simple WebDOMEventListener, it offers the added capability of
 // notifying the listeners of whether the clicked node was already focused
@@ skipping 11 matching lines @@
   // The |listener| will be notified when an element is clicked.  It must
   // outlive this class.
   PageClickTracker(content::RenderView* render_view,
                    PageClickListener* listener);
   virtual ~PageClickTracker();
 
  private:
   // RenderView::Observer implementation.
   virtual void DidFinishDocumentLoad(WebKit::WebFrame* frame) OVERRIDE;
   virtual void FrameDetached(WebKit::WebFrame* frame) OVERRIDE;
-  virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event) OVERRIDE;
+  virtual void DidHandleMouseEvent(
+      const WebKit::WebMouseEvent& event) OVERRIDE;
+  virtual void DidHandleGestureEvent(
+      const WebKit::WebGestureEvent& event) OVERRIDE;
 
   // WebKit::WebDOMEventListener implementation.
   virtual void handleEvent(const WebKit::WebDOMEvent& event);
 
   // Checks to see if a text field is losing focus and inform listeners if
   // it is.
   void HandleTextFieldMaybeLosingFocus(
       const WebKit::WebNode& newly_clicked_node);
 
+  // Helper method for DidHandleMouseEvent and DidHandleGestureEvent.
+  void DidHandleMouseOrGestureEvent(
+      const WebKit::WebInputEvent& event,
+      WebKit::WebInputEvent::Type expected_type,
+      autofill::InputEventSource source);

[Ilya Sherman, 2013/06/06 20:35:08]

nit: No need for the "autofill::" prefix, as this code is already in the
autofill namespace.

+
   // The last node that was clicked and had focus.
   WebKit::WebNode last_node_clicked_;
 
   // Whether the last clicked node had focused before it was clicked.
   bool was_focused_;
 
   // The frames we are listening to for mouse events.
   std::vector<WebKit::WebFrame*> tracked_frames_;
 
   // The listener getting the actual notifications.
   PageClickListener* listener_;
 
   DISALLOW_COPY_AND_ASSIGN(PageClickTracker);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_RENDERER_PAGE_CLICK_TRACKER_H_