Set windows to be fully opaque upon leaving overview mode in Athena

athena/wm/window_overview_mode.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "athena/wm/window_overview_mode.h"
 
 #include <algorithm>
 #include <functional>
 #include <vector>
 
@@ skipping 77 matching lines @@
 
   ui::ScopedLayerAnimationSettings settings(window->layer()->GetAnimator());
   settings.SetPreemptionStrategy(
       ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
   settings.SetTransitionDuration(base::TimeDelta::FromMilliseconds(250));
 
   settings.AddObserver(new ui::ClosureAnimationObserver(
       base::Bind(&HideWindowIfNotVisible, window, split_view_controller)));
 
   window->SetTransform(gfx::Transform());
+
+  // Reset the window opacity in case the user is dragging a window.
+  window->layer()->SetOpacity(1.0f);
+
   wm::SetShadowType(window, wm::SHADOW_TYPE_NONE);
 }
 
 // Always returns the same target.
 class StaticWindowTargeter : public aura::WindowTargeter {
  public:
   explicit StaticWindowTargeter(aura::Window* target) : target_(target) {}
   virtual ~StaticWindowTargeter() {}
 
  private:
@@ skipping 502 matching lines @@
     aura::Window* container,
     const WindowListProvider* window_list_provider,
     SplitViewController* split_view_controller,
     WindowOverviewModeDelegate* delegate) {
   return scoped_ptr<WindowOverviewMode>(
       new WindowOverviewModeImpl(container, window_list_provider,
                                  split_view_controller, delegate));
 }
 
 }  // namespace athena