Show a different icon in the launcher for incognito windows

ash/launcher/tabbed_launcher_button.h

Index: ash/launcher/tabbed_launcher_button.h
diff --git a/ash/launcher/tabbed_launcher_button.h b/ash/launcher/tabbed_launcher_button.h
index 44917b7f76290de403e07e34a4cbfdf54df54c6e..c15af13504ab8707c6c147858c7bd344768c4377 100644
--- a/ash/launcher/tabbed_launcher_button.h
+++ b/ash/launcher/tabbed_launcher_button.h
@@ -32,7 +32,7 @@ class TabbedLauncherButton : public views::ImageButton {
   void PrepareForImageChange();
 
   // Sets the images to display for this entry.
-  void SetTabImage(const SkBitmap& image, int count);
+  void SetTabImage(const SkBitmap& image, int count, bool private_tab);
 
  protected:
   // View overrides:
@@ -90,11 +90,15 @@ class TabbedLauncherButton : public views::ImageButton {
   bool show_image_;
 
   // Background images. Which one is chosen depends upon how many images are
-  // provided.
+  // provided and if the tab is private.

[oshima, 2012/03/09 17:54:02]

browser window is incognito (or off the record).

[Zachary Kuznia, 2012/03/09 22:17:35]

Done.

   static ImageSet* bg_image_1_;
   static ImageSet* bg_image_2_;
   static ImageSet* bg_image_3_;
 
+  static ImageSet* bg_private_image_1_;
+  static ImageSet* bg_private_image_2_;
+  static ImageSet* bg_private_image_3_;
+
   views::GlowHoverController hover_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(TabbedLauncherButton);