Change chrome:// favicons in tabstrip based on theming.

chrome/browser/ui/views/tabs/tab.h

Index: chrome/browser/ui/views/tabs/tab.h
diff --git a/chrome/browser/ui/views/tabs/tab.h b/chrome/browser/ui/views/tabs/tab.h
index accdc108778efac75e8a061c4dd2546bd48d03bf..e34d0d53ceb93b6bc2d94127ef11f1e82156ad69 100644
--- a/chrome/browser/ui/views/tabs/tab.h
+++ b/chrome/browser/ui/views/tabs/tab.h
@@ -16,6 +16,7 @@
 #include "ui/base/layout.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/geometry/point.h"
+#include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/paint_throbber.h"
 #include "ui/views/context_menu_controller.h"
 #include "ui/views/controls/button/button.h"
@@ -291,9 +292,7 @@ class Tab : public gfx::AnimationDelegate,
   // animation.
   void SetFaviconHidingOffset(int offset);
 
-  void set_should_display_crashed_favicon() {
-    should_display_crashed_favicon_ = true;
-  }
+  void SetShouldDisplayCrashedFavicon(bool value);
 
   // Recalculates the correct |button_color_| and resets the title, alert
   // indicator, and close button colors if necessary.  This should be called any
@@ -396,6 +395,11 @@ class Tab : public gfx::AnimationDelegate,
   // The current color of the alert indicator and close button icons.
   SkColor button_color_;
 
+  // The favicon for the tab. This might be the sad tab icon or a copy of
+  // data().favicon and may be modified for theming. It is created on demand
+  // and thus may be null.
+  gfx::ImageSkia favicon_;
+
   // As the majority of the tabs are inactive, and painting tabs is slowish,
   // we cache a handful of the inactive tab backgrounds here.
   static ImageCache* image_cache_;