aura: brightness and volume bubble.

views/bubble/bubble_delegate.cc

Index: views/bubble/bubble_delegate.cc
diff --git a/views/bubble/bubble_delegate.cc b/views/bubble/bubble_delegate.cc
index b46e3536bf73feba52fed2035c22b8abb319c331..1fb7ebf56cf7e86b4e51e14fc1691d2ecc311a82 100644
--- a/views/bubble/bubble_delegate.cc
+++ b/views/bubble/bubble_delegate.cc
@@ -29,7 +29,8 @@ BubbleDelegateView::BubbleDelegateView(
       close_on_esc_(true),
       anchor_point_(anchor_point),
       arrow_location_(arrow_location),
-      color_(color) {
+      color_(color),
+      original_opacity_(255) {
   AddAccelerator(Accelerator(ui::VKEY_ESCAPE, 0));
 }
 
@@ -88,14 +89,21 @@ void BubbleDelegateView::StartFade(bool fade_in) {
   fade_animation_->SetSlideDuration(kHideFadeDurationMS);
   fade_animation_->Reset(fade_in ? 0.0 : 1.0);
   if (fade_in) {
-    GetWidget()->SetOpacity(0);
+    original_opacity_ = 0;
+    GetWidget()->SetOpacity(original_opacity_);
     GetWidget()->Show();
     fade_animation_->Show();
   } else {
+    original_opacity_ = 255;
     fade_animation_->Hide();
   }
 }
 
+void BubbleDelegateView::ResetFade() {
+  fade_animation_.reset();
+  GetWidget()->SetOpacity(original_opacity_);
+}
+
 bool BubbleDelegateView::AcceleratorPressed(const Accelerator& accelerator) {
   if (!close_on_esc() || accelerator.key_code() != ui::VKEY_ESCAPE)
     return false;