[WIP] Allow scroll events to permanently change the default gesture handler in RootView

ui/views/controls/slider.cc

Index: ui/views/controls/slider.cc
diff --git a/ui/views/controls/slider.cc b/ui/views/controls/slider.cc
index 74e803d454b284e21e75f7752e417fe01cbac44b..72890625d23502b327d62fb7c43504915f7f2a12 100644
--- a/ui/views/controls/slider.cc
+++ b/ui/views/controls/slider.cc
@@ -317,7 +317,7 @@ void Slider::OnBlur() {
 
 void Slider::OnGestureEvent(ui::GestureEvent* event) {
   switch (event->type()) {
-    // In a multi point gesture only the touch point will generate
+    // In a multi point gesture only the (first?) touch point will generate

[sadrul, 2014/07/24 19:12:13]

yes. Looks like someone accidentally the word.

     // an ET_GESTURE_TAP_DOWN event.
     case ui::ET_GESTURE_TAP_DOWN:
       OnSliderDragStarted();
@@ -328,12 +328,19 @@ void Slider::OnGestureEvent(ui::GestureEvent* event) {
       MoveButtonTo(event->location());
       event->SetHandled();
       break;
-    case ui::ET_GESTURE_END:
+    case ui::ET_GESTURE_SCROLL_END:
+    case ui::ET_SCROLL_FLING_START:
+    case ui::ET_GESTURE_TAP:
       MoveButtonTo(event->location());
       event->SetHandled();
       if (event->details().touch_points() <= 1)
         OnSliderDragEnded();
       break;
+    case ui::ET_GESTURE_TWO_FINGER_TAP:
+      MoveButtonTo(event->location());
+      event->SetHandled();
+      OnSliderDragEnded();
+      break;

[sadrul, 2014/07/24 19:12:13]

Is this necessary?

     default:
       break;
   }