Use high resolution icons where possible for streamlined hosted app icons.

chrome/browser/ui/browser.h

Index: chrome/browser/ui/browser.h
diff --git a/chrome/browser/ui/browser.h b/chrome/browser/ui/browser.h
index 7f851351abc0f36fe118305b0567dc71a551a7f1..68d48e7a531fb50b3cacfbef623b5484eef90731 100644
--- a/chrome/browser/ui/browser.h
+++ b/chrome/browser/ui/browser.h
@@ -29,6 +29,7 @@
 #include "chrome/browser/ui/tab_contents/core_tab_helper_delegate.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
 #include "chrome/browser/ui/toolbar/toolbar_model.h"
+#include "chrome/browser/ui/web_applications/hosted_app_tab_helper_delegate.h"
 #include "chrome/browser/ui/zoom/zoom_observer.h"
 #include "chrome/common/content_settings.h"
 #include "chrome/common/content_settings_types.h"
@@ -99,6 +100,7 @@ class Browser : public TabStripModelObserver,
                 public SearchEngineTabHelperDelegate,
                 public ChromeWebModalDialogManagerDelegate,
                 public BookmarkTabHelperDelegate,
+                public HostedAppTabHelperDelegate,
                 public ZoomObserver,
                 public content::PageNavigator,
                 public content::NotificationObserver,
@@ -281,9 +283,6 @@ class Browser : public TabStripModelObserver,
 
   // State Storage and Retrieval for UI ///////////////////////////////////////
 
-  // Gets the Favicon of the page in the selected tab.
-  gfx::Image GetCurrentPageIcon() const;
-
   // Gets the title of the window based on the selected tab's title.
   string16 GetWindowTitleForCurrentTab() const;
 
@@ -679,6 +678,9 @@ class Browser : public TabStripModelObserver,
   virtual void URLStarredChanged(content::WebContents* web_contents,
                                  bool starred) OVERRIDE;
 
+  // Overriden from HostedAppTabHelper:
+  virtual void OnWindowIconLoaded(content::WebContents* source) OVERRIDE;
+
   // Overridden from ZoomObserver:
   virtual void OnZoomChanged(content::WebContents* source,
                              bool can_show_bubble) OVERRIDE;