Password autofill: Check for user gesture switches to new Blink backend

components/autofill/content/renderer/password_autofill_agent.cc

Index: components/autofill/content/renderer/password_autofill_agent.cc
diff --git a/components/autofill/content/renderer/password_autofill_agent.cc b/components/autofill/content/renderer/password_autofill_agent.cc
index 5ba541b5ee5bfcf8346d4af9ee685e213a8246b7..2ac7f82ab1457d667b83ec0bd3d2f973d6f69317 100644
--- a/components/autofill/content/renderer/password_autofill_agent.cc
+++ b/components/autofill/content/renderer/password_autofill_agent.cc
@@ -395,6 +395,10 @@ void PasswordAutofillAgent::OnDynamicFormsSeen(blink::WebFrame* frame) {
   SendPasswordForms(frame, false /* only_visible */);
 }
 
+void PasswordAutofillAgent::FirstUserGestureObserved() {
+  gatekeeper_.OnUserGesture();
+}
+
 void PasswordAutofillAgent::SendPasswordForms(blink::WebFrame* frame,
                                               bool only_visible) {
   // Make sure that this security origin is allowed to use password manager.
@@ -517,10 +521,6 @@ void PasswordAutofillAgent::WillSubmitForm(blink::WebLocalFrame* frame,
   }
 }
 
-void PasswordAutofillAgent::WillProcessUserGesture() {
-  gatekeeper_.OnUserGesture();
-}
-
 blink::WebFrame* PasswordAutofillAgent::CurrentOrChildFrameWithSavedForms(
     const blink::WebFrame* current_frame) {
   for (FrameToPasswordFormMap::const_iterator it =
@@ -818,17 +818,11 @@ bool PasswordAutofillAgent::FillUserNameAndPassword(
     return false;
   }
 
-// TODO(vabr): The "gatekeeper" feature is currently disabled on mobile.
-// http://crbug.com/345510#c13
-#if !defined(OS_ANDROID) || !defined(OS_IOS)
   // Wait to fill in the password until a user gesture occurs. This is to make
   // sure that we do not fill in the DOM with a password until we believe the
   // user is intentionally interacting with the page.
   password_element->setSuggestedValue(password);
   gatekeeper_.RegisterElement(password_element);
-#else
-  password_element->setValue(password);
-#endif
 
   password_element->setAutofilled(true);
   return true;