[Icons NTP] Working prototype to fetch, store, and display big icons.

chrome/browser/favicon/favicon_service.cc

Index: chrome/browser/favicon/favicon_service.cc
diff --git a/chrome/browser/favicon/favicon_service.cc b/chrome/browser/favicon/favicon_service.cc
index 2bbdadb7b24f594affb165d9d1dd4d622ed04285..8ee927baa0d89168c6e5a929895afce5735c8949 100644
--- a/chrome/browser/favicon/favicon_service.cc
+++ b/chrome/browser/favicon/favicon_service.cc
@@ -271,6 +271,30 @@ base::CancelableTaskTracker::TaskId FaviconService::GetLargestRawFaviconForID(
   return RunWithEmptyResultAsync(callback_runner, tracker);
 }
 
+base::CancelableTaskTracker::TaskId FaviconService::HackGetBigIcon(
+    const GURL& page_url,
+    int desired_size_in_pixel,
+    const favicon_base::FaviconRawBitmapCallback& callback,
+    base::CancelableTaskTracker* tracker) {
+  favicon_base::FaviconResultsCallback favicon_results_callback =
+      Bind(&FaviconService::RunFaviconRawBitmapCallbackWithBitmapResults,
+           base::Unretained(this),
+           callback,
+           0);
+  if (history_service_) {
+    int icon_types =
+        favicon_base::TOUCH_ICON | favicon_base::TOUCH_PRECOMPOSED_ICON;
+    std::vector<int> desired_sizes_in_pixel;
+    desired_sizes_in_pixel.push_back(desired_size_in_pixel);
+    return history_service_->GetFaviconsForURL(page_url,
+                                               icon_types,
+                                               desired_sizes_in_pixel,
+                                               favicon_results_callback,
+                                               tracker);
+  }
+  return RunWithEmptyResultAsync(favicon_results_callback, tracker);
+}
+
 void FaviconService::SetFaviconOutOfDateForPage(const GURL& page_url) {
   if (history_service_)
     history_service_->SetFaviconsOutOfDateForPage(page_url);