rAc: Enforce a 3 second grace period for generated card bubble.

ui/views/widget/widget.cc

Index: ui/views/widget/widget.cc
diff --git a/ui/views/widget/widget.cc b/ui/views/widget/widget.cc
index 4bf2a850f05b01e105f8afe61e534f34ea5077da..7d07b98020a84519a7bf25f212b2e503c3794094 100644
--- a/ui/views/widget/widget.cc
+++ b/ui/views/widget/widget.cc
@@ -173,6 +173,7 @@ Widget::Widget()
       is_mouse_button_pressed_(false),
       is_touch_down_(false),
       last_mouse_event_was_move_(false),
+      capture_explicitly_set_(false),
       root_layers_dirty_(false),
       movement_disabled_(false) {
 }
@@ -917,11 +918,13 @@ void Widget::SetCapture(View* view) {
   root_view_->SetMouseHandler(view);
   if (!native_widget_->HasCapture())
     native_widget_->SetCapture();
+  capture_explicitly_set_ = true;

[sky, 2013/09/04 14:10:15]

Do you verify all callers of SetCapture are ok with new behavior? I suspect tab
dragging isn't, but I didn't verify that.

[Evan Stade, 2013/09/04 23:00:38]

You are quite right. Do you like this new approach better?

 }
 
 void Widget::ReleaseCapture() {
   if (native_widget_->HasCapture())
     native_widget_->ReleaseCapture();
+  capture_explicitly_set_ = false;
 }
 
 bool Widget::HasCapture() {
@@ -1315,7 +1318,7 @@ void Widget::DestroyRootView() {
 // Widget, private:
 
 bool Widget::ShouldReleaseCaptureOnMouseReleased() const {
-  return true;
+  return !capture_explicitly_set_;
 }
 
 void Widget::SetInactiveRenderingDisabled(bool value) {