Touch gestures for System Tray/ IME/ Stylus/ Notifications

ui/views/bubble/tray_bubble_view.cc

Index: ui/views/bubble/tray_bubble_view.cc
diff --git a/ui/views/bubble/tray_bubble_view.cc b/ui/views/bubble/tray_bubble_view.cc
index 46eebae8b028a3e95ceb7d357b08bfebfb71b686..7126a0f4b833fcf989fc5d4fa57ced77c132fbef 100644
--- a/ui/views/bubble/tray_bubble_view.cc
+++ b/ui/views/bubble/tray_bubble_view.cc
@@ -169,6 +169,19 @@ class BottomAlignedBoxLayout : public BoxLayout {
 using internal::TrayBubbleContentMask;
 using internal::BottomAlignedBoxLayout;
 
+base::string16 TrayBubbleView::Delegate::GetAccessibleNameForBubble() {
+  return base::string16();
+}
+
+bool TrayBubbleView::Delegate::ShouldEnableExtraKeyboardAccessibility() {
+  return false;
+}
+
+bool TrayBubbleView::Delegate::ProcessGestureEventForBubble(
+    ui::GestureEvent* event) {
+  return false;
+}
+
 TrayBubbleView::InitParams::InitParams() = default;
 
 TrayBubbleView::InitParams::InitParams(const InitParams& other) = default;
@@ -393,6 +406,11 @@ void TrayBubbleView::GetAccessibleNodeData(ui::AXNodeData* node_data) {
   }
 }
 
+void TrayBubbleView::OnGestureEvent(ui::GestureEvent* event) {
+  if (!delegate_ || !delegate_->ProcessGestureEventForBubble(event))
+    BubbleDialogDelegateView::OnGestureEvent(event);
+}
+
 void TrayBubbleView::MouseMovedOutOfHost() {
   // The mouse was accidentally over the bubble when it opened and the AutoClose
   // logic was not activated. Now that the user did move the mouse we tell the