[autofill] Show autofill suggestions on tap gesture.

components/autofill/renderer/autofill_agent.cc

 // Copyright (c) 2012 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.
 
 #include "components/autofill/renderer/autofill_agent.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
@@ skipping 342 matching lines @@
       form_data,
       frame->document().url()));
 }
 
 void AutofillAgent::setIgnoreTextChanges(bool ignore) {
   ignore_text_changes_ = ignore;
 }
 
 void AutofillAgent::InputElementClicked(const WebInputElement& element,
                                         bool was_focused,
-                                        bool is_focused) {
-  if (was_focused)
+                                        bool is_focused,
+                                        InputEventSource input_event_source) {
+  if (was_focused || input_event_source == TAP_GESTURE)
     ShowSuggestions(element, true, false, true);
 }
 
 void AutofillAgent::InputElementLostFocus() {
   HideHostAutofillUi();
 }
 
 void AutofillAgent::didAcceptAutofillSuggestion(const WebNode& node,
                                                 const WebString& value,
                                                 const WebString& label,
@@ skipping 600 matching lines @@
   if (!forms.empty()) {
     if (click_timer_.IsRunning())
       click_timer_.Stop();
     Send(new AutofillHostMsg_FormsSeen(routing_id(), forms,
                                        forms_seen_timestamp_,
                                        state));
   }
 }
 
 }  // namespace autofill