Disable tap suppression logic for WebView

ui/events/gesture_detection/gesture_configuration.h

Index: ui/events/gesture_detection/gesture_configuration.h
diff --git a/ui/events/gesture_detection/gesture_configuration.h b/ui/events/gesture_detection/gesture_configuration.h
index 78234a02dd28518b5b20717fc997c52ea7043e8b..6d100c8eeb36f0f8abc564e342971b6890a365e9 100644
--- a/ui/events/gesture_detection/gesture_configuration.h
+++ b/ui/events/gesture_detection/gesture_configuration.h
@@ -28,6 +28,18 @@ class GESTURE_DETECTION_EXPORT GestureConfiguration {
   bool double_tap_enabled() const { return double_tap_enabled_; }
   void set_double_tap_enabled(bool enabled) { double_tap_enabled_ = enabled; }
   int double_tap_timeout_in_ms() const { return double_tap_timeout_in_ms_; }
+  bool fling_touchpad_tap_suppression_enabled() const {
+    return fling_touchpad_tap_suppression_enabled_;
+  }
+  void set_fling_touchpad_tap_suppression_enabled(bool enabled) {
+    fling_touchpad_tap_suppression_enabled_ = enabled;
+  }
+  bool fling_touchscreen_tap_suppression_enabled() const {
+    return fling_touchscreen_tap_suppression_enabled_;
+  }
+  void set_fling_touchscreen_tap_suppression_enabled(bool enabled) {
+    fling_touchscreen_tap_suppression_enabled_ = enabled;
+  }
   int fling_max_cancel_to_down_time_in_ms() const {
     return fling_max_cancel_to_down_time_in_ms_;
   }
@@ -196,6 +208,11 @@ class GESTURE_DETECTION_EXPORT GestureConfiguration {
   bool double_tap_enabled_;
   int double_tap_timeout_in_ms_;
 
+  // Whether to suppress touchscreen/touchpad taps that occur during a fling (
+  // in particular, when such taps cancel the active fling).
+  bool fling_touchpad_tap_suppression_enabled_;
+  bool fling_touchscreen_tap_suppression_enabled_;

[tdresser, 2015/08/04 12:20:50]

I have a mild preference for the name:
touch.*_fling_tap_suppression_enabled_.

Feel free to leave it this way if you prefer this.

[jdduke (slow), 2015/08/04 17:19:25]

Yeah, I actually had that originally, and went back and forth. The reason I
somewhat prefer this version is because the source (touchpad/touchscreen) refers
to the tap source, rather than the fling source. I considered dropping the
"fling_" prefix altogether, but there's some precedent in the other variables.
Let me know what you'd like either way.

[tdresser, 2015/08/04 21:00:15]

LGTM.

+
   // Maximum time between a GestureFlingCancel and a mousedown such that the
   // mousedown is considered associated with the cancel event.
   int fling_max_cancel_to_down_time_in_ms_;