[autofill] Show autofill suggestions on tap gesture.

components/autofill/renderer/page_click_tracker.h

Index: components/autofill/renderer/page_click_tracker.h
diff --git a/components/autofill/renderer/page_click_tracker.h b/components/autofill/renderer/page_click_tracker.h
index 009ce9b512005f5c30e86d3986193071742adbfd..6782278767c4899e692d315f0ef3ec5874d1277c 100644
--- a/components/autofill/renderer/page_click_tracker.h
+++ b/components/autofill/renderer/page_click_tracker.h
@@ -8,8 +8,10 @@
 #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 {
@@ -41,7 +43,10 @@ class PageClickTracker : public content::RenderViewObserver,
   // 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);
@@ -51,6 +56,12 @@ class PageClickTracker : public content::RenderViewObserver,
   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_;