move favicon download code from chrome/ into content/

chrome/browser/ui/views/ash/balloon_view_ash.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/ash/balloon_view_ash.h"
 
 #include "ash/shell.h"
 #include "ash/system/web_notification/web_notification_tray.h"
 #include "base/logging.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/favicon/favicon_download_helper.h"
 #include "chrome/browser/favicon/favicon_util.h"
 #include "chrome/browser/notifications/balloon_collection.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/common/icon_messages.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_macros.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/message_center/message_center.h"
 #include "webkit/glue/image_resource_fetcher.h"
 
 namespace {
 
 const int kNotificationIconImageSize = 32;
 
 message_center::MessageCenter* GetMessageCenter() {
   return ash::Shell::GetInstance()->GetWebNotificationTray()->message_center();
 }
 
 }  // namespace
 
 BalloonViewAsh::BalloonViewAsh(BalloonCollection* collection)
     : collection_(collection),
-      balloon_(NULL) {
+      balloon_(NULL),
+      ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
 }
 
 BalloonViewAsh::~BalloonViewAsh() {
 }
 
 // BalloonView interface.
 void BalloonViewAsh::Show(Balloon* balloon) {
   balloon_ = balloon;
   const Notification& notification = balloon_->notification();
   current_notification_id_ = notification.notification_id();
@@ skipping 30 matching lines @@
 }
 
 gfx::Size BalloonViewAsh::GetSize() const {
   return gfx::Size();
 }
 
 BalloonHost* BalloonViewAsh::GetHost() const {
   return NULL;
 }
 
+void BalloonViewAsh::DidDownloadFavicon(
+    int id,
+    const GURL& image_url,
+    bool errored,
+    int requested_size,
+    const std::vector<SkBitmap>& bitmaps) {
+  if (id != current_download_id_ || bitmaps.empty())
+    return;
+  GetMessageCenter()->SetNotificationImage(
+      cached_notification_id_, gfx::ImageSkia(bitmaps[0]));
+  current_download_id_ = -1;
+  cached_notification_id_.clear();
+}
+
 void BalloonViewAsh::FetchIcon(const Notification& notification) {
   if (!notification.icon().isNull()) {
     GetMessageCenter()->SetNotificationImage(
         notification.notification_id(), notification.icon());
     return;
   }
   if (notification.icon_url().is_empty())
     return;
   content::RenderViewHost* rvh = notification.GetRenderViewHost();
   if (!rvh) {
     LOG(WARNING) << "Notification has icon url but no RenderViewHost";
     return;
   }
   content::WebContents* web_contents =
       content::WebContents::FromRenderViewHost(rvh);
   if (!web_contents) {
     LOG(WARNING) << "Notification has icon url but no WebContents";
     return;
   }
-  icon_fetcher_.reset(new FaviconDownloadHelper(web_contents, this));
-  current_download_id_ = icon_fetcher_->DownloadFavicon(
-      notification.icon_url(), kNotificationIconImageSize);
+  current_download_id_ = web_contents->DownloadFavicon(
+      notification.icon_url(), kNotificationIconImageSize,
+      base::Bind(&BalloonViewAsh::DidDownloadFavicon,
+                 weak_ptr_factory_.GetWeakPtr()));
   cached_notification_id_ = notification.notification_id();
 }
 
-void BalloonViewAsh::OnDidDownloadFavicon(
-    int id,
-    const GURL& image_url,
-    bool errored,
-    int requested_size,
-    const std::vector<SkBitmap>& bitmaps) {
-  if (id != current_download_id_ || bitmaps.empty())
-    return;
-  GetMessageCenter()->SetNotificationImage(
-      cached_notification_id_, gfx::ImageSkia(bitmaps[0]));
-  current_download_id_ = -1;
-  cached_notification_id_.clear();
-}
-
 std::string BalloonViewAsh::GetExtensionId(Balloon* balloon) {
   ExtensionService* extension_service =
       balloon_->profile()->GetExtensionService();
   const GURL& origin = balloon_->notification().origin_url();
   const extensions::Extension* extension =
       extension_service->extensions()->GetExtensionOrAppByURL(
           ExtensionURLInfo(origin));
   if (extension)
     return extension->id();
   return std::string();
 }