move favicon download code from chrome/ into content/

chrome/browser/ui/views/create_application_shortcut_view.h

Index: chrome/browser/ui/views/create_application_shortcut_view.h
diff --git a/chrome/browser/ui/views/create_application_shortcut_view.h b/chrome/browser/ui/views/create_application_shortcut_view.h
index db41f63d721c1d6d02796be8988b178c5c6c137d..489d55a27d6574f904b4bc6c3d2b9427b3cefed9 100644
--- a/chrome/browser/ui/views/create_application_shortcut_view.h
+++ b/chrome/browser/ui/views/create_application_shortcut_view.h
@@ -11,8 +11,8 @@
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
-#include "chrome/browser/favicon/favicon_download_helper_delegate.h"
 #include "chrome/browser/web_applications/web_app.h"
+#include "content/public/browser/favicon_download_delegate.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/window/dialog_delegate.h"
 
@@ -85,8 +85,9 @@ class CreateApplicationShortcutView : public views::DialogDelegateView,
 };
 
 // Create an application shortcut pointing to a URL.
-class CreateUrlApplicationShortcutView : public CreateApplicationShortcutView,
-                                         public FaviconDownloadHelperDelegate {
+class CreateUrlApplicationShortcutView
+    : public CreateApplicationShortcutView,
+      public content::FaviconDownloadDelegate {
  public:
   explicit CreateUrlApplicationShortcutView(content::WebContents* web_contents);
   virtual ~CreateUrlApplicationShortcutView();
@@ -98,8 +99,8 @@ class CreateUrlApplicationShortcutView : public CreateApplicationShortcutView,
   // The first largest icon downloaded and decoded successfully will be used.
   void FetchIcon();
 
-  // FaviconDownloadHelperDelegate overrides.
-  virtual void OnDidDownloadFavicon(
+  // content::FaviconDownloadDelegate overrides.
+  virtual void DidDownloadFavicon(
       int id,
       const GURL& image_url,
       bool errored,
@@ -109,9 +110,6 @@ class CreateUrlApplicationShortcutView : public CreateApplicationShortcutView,
   // The tab whose URL is being turned into an app.
   content::WebContents* web_contents_;
 
-  // Helper class to manage the downloading of favicons.
-  scoped_ptr<FaviconDownloadHelper> download_helper_;
-
   // Pending app icon download tracked by us.
   int pending_download_id_;