[Android] Add GestureStateListener hook for all single-tap event acks

Previously, GestureStateListener provided a method for listening to unhandled
tap events.  Expand this to include handled taps, useful for logging general
site interaction metrics.

BUG=374335

Review URL: https://codereview.chromium.org/286243004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271227 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/android/content_view_core_impl.cc

@@ -591,10 +591,12 @@ void ContentViewCoreImpl::OnGestureEventAck(const blink::WebGestureEvent& event,
       Java_ContentViewCore_onPinchEndEventAck(env, j_obj.obj());
       break;
     case WebInputEvent::GestureTap:
-      if (ack_result != INPUT_EVENT_ACK_STATE_CONSUMED) {
-        Java_ContentViewCore_onTapEventNotConsumed(
-            env, j_obj.obj(), event.x * dpi_scale(), event.y * dpi_scale());
-      }
+      Java_ContentViewCore_onSingleTapEventAck(
+          env,
+          j_obj.obj(),
+          ack_result == INPUT_EVENT_ACK_STATE_CONSUMED,
+          event.x * dpi_scale(),
+          event.y * dpi_scale());
       break;
     case WebInputEvent::GestureDoubleTap:
       Java_ContentViewCore_onDoubleTapEventAck(env, j_obj.obj());

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

@@ -1187,10 +1187,10 @@ public class ContentViewCore
 
     @SuppressWarnings("unused")
     @CalledByNative
-    private void onTapEventNotConsumed(int x, int y) {
+    private void onSingleTapEventAck(boolean consumed, int x, int y) {
         for (mGestureStateListenersIterator.rewind();
                 mGestureStateListenersIterator.hasNext();) {
-            mGestureStateListenersIterator.next().onUnhandledTapEvent(x, y);
+            mGestureStateListenersIterator.next().onSingleTap(consumed, x, y);
         }
     }
 

content/public/android/java/src/org/chromium/content_public/browser/GestureStateListener.java

@@ -63,7 +63,8 @@ public class GestureStateListener {
     public void onScrollOffsetOrExtentChanged(int scrollOffsetY, int scrollExtentY) {}
 
     /*
-     * Called when a tap event was not handled by the renderer.
+     * Called after a single-tap gesture event was dispatched to the renderer,
+     * indicating whether or not the gesture was consumed.
      */
-    public void onUnhandledTapEvent(int x, int y) {}
+    public void onSingleTap(boolean consumed, int x, int y) {}
 }