Converts remainder of ui and chrome/browser/ui/views/frame to use ImageSkia

ash/shell/content_client/shell_content_browser_client.h

Index: ash/shell/content_client/shell_content_browser_client.h
diff --git a/ash/shell/content_client/shell_content_browser_client.h b/ash/shell/content_client/shell_content_browser_client.h
index 950673877d8389ec19d8b8e134eec2f932f9edb7..96b7301fb4ffcd71c3d8b9f97febb09989b78569 100644
--- a/ash/shell/content_client/shell_content_browser_client.h
+++ b/ash/shell/content_client/shell_content_browser_client.h
@@ -68,7 +68,7 @@ class ShellContentBrowserClient : public content::ContentBrowserClient {
   virtual std::string GetApplicationLocale() OVERRIDE;
   virtual std::string GetAcceptLangs(
       content::BrowserContext* context) OVERRIDE;
-  virtual SkBitmap* GetDefaultFavicon() OVERRIDE;
+  virtual gfx::ImageSkia* GetDefaultFavicon() OVERRIDE;
   virtual bool AllowAppCache(const GURL& manifest_url,
                              const GURL& first_party,
                              content::ResourceContext* context) OVERRIDE;