Add possibility to define data callback to BitmapFetcher

chrome/browser/image_holder.cc

 // Copyright 2014 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.
 
 // This class holds the URL to an image and the bitmap for the fetched image,
 // and has code to fetch the bitmap from the URL.
 
 #include "chrome/browser/image_holder.h"
 
 #include "chrome/browser/profiles/profile.h"
@@ skipping 50 matching lines @@
   if (url.is_valid()) {
     fetchers_.push_back(new chrome::BitmapFetcher(url, this));
     DVLOG(2) << __FUNCTION__ << "Pushing bitmap " << url;
   }
 }
 
 void ImageHolder::StartFetch() {
   // Now that we have queued them all, start the fetching.
   ScopedVector<chrome::BitmapFetcher>::iterator iter;
   for (iter = fetchers_.begin(); iter != fetchers_.end(); ++iter) {
-    (*iter)->Start(
+    (*iter)->Init(
         profile_->GetRequestContext(),
         std::string(),
         net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE,
         net::LOAD_NORMAL);
+    (*iter)->Start();
   }
 }
 
 // Method inherited from BitmapFetcher delegate.
 void ImageHolder::OnFetchComplete(const GURL& url, const SkBitmap* bitmap) {
   // TODO(petewil): Should I retry if a fetch fails?
   // Match the bitmap to the URL to put it into the image with the correct scale
   // factor.
   if (url == low_dpi_url_) {
     low_dpi_fetched_ = true;
     if (bitmap != NULL)
       image_.AddRepresentation(gfx::ImageSkiaRep(*bitmap, 1.0));
   } else if (url == high_dpi_url_) {
     high_dpi_fetched_ = true;
     if (bitmap != NULL)
       image_.AddRepresentation(gfx::ImageSkiaRep(*bitmap, 2.0));
   } else {
     DVLOG(2) << __FUNCTION__ << "Unmatched bitmap arrived " << url;
   }
 
   // Notify callback of bitmap arrival.
   delegate_->OnFetchComplete();
 }
 
 }  // namespace chrome.