Flash window by pulsing their launcher icon state indicator

ash/launcher/launcher_button.cc

 // Copyright (c) 2012 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 "ash/launcher/launcher_button.h"
 
 #include <algorithm>
 
 #include "ash/launcher/launcher_button_host.h"
 #include "grit/ui_resources.h"
@@ skipping 55 matching lines @@
       views::ImageView::OnPaint(canvas);
     }
   }
 
   // ui::AnimationDelegate overrides.
   void AnimationProgressed(const ui::Animation* animation) OVERRIDE {
     SchedulePaint();
   }
 
   void ShowAttention(bool show) {
-    if (show)
+    if (show) {
+      // It's less disruptive if we don't start the pulsing at 0.
+      animation_.Reset(0.375);
       animation_.StartThrobbing(-1);
-    else
-      animation_.Reset();
+    } else {
+      animation_.Reset(0.0);
+    }
   }
 
  private:
   ui::ThrobAnimation animation_;
 
   DISALLOW_COPY_AND_ASSIGN(BarView);
 };
 
 LauncherButton::IconView::IconView() : icon_size_(kIconHeight) {
 }
@@ skipping 217 matching lines @@
       bar_id = IDR_AURA_LAUNCHER_UNDERLINE_RUNNING;
 
     bar_->SetImage(rb.GetImageNamed(bar_id).ToSkBitmap());
   }
 
   Layout();
   SchedulePaint();
 }
 }  // namespace internal
 }  // namespace ash