Added support for image notifications.

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

Index: chrome/browser/ui/views/ash/balloon_view_ash.cc
diff --git a/chrome/browser/ui/views/ash/balloon_view_ash.cc b/chrome/browser/ui/views/ash/balloon_view_ash.cc
index 674d45caa1e8170dc2c829b983025bc8dd6782c0..9cc1bb33f97afacb9a1f928fddfbe86dbd4ebf3b 100644
--- a/chrome/browser/ui/views/ash/balloon_view_ash.cc
+++ b/chrome/browser/ui/views/ash/balloon_view_ash.cc
@@ -188,6 +188,11 @@ void BalloonViewAsh::SetNotificationIcon(const std::string& id,
   GetMessageCenter()->SetNotificationPrimaryIcon(id, image);
 }
 
+void BalloonViewAsh::SetNotificationImage(const std::string& id,
+                                          const gfx::ImageSkia& image) {
+  GetMessageCenter()->SetNotificationImage(id, image);
+}
+
 void BalloonViewAsh::DownloadImages(const Notification& notification) {
   // Cancel any previous downloads.
   downloads_.clear();
@@ -202,6 +207,19 @@ void BalloonViewAsh::DownloadImages(const Notification& notification) {
             base::Unretained(this)));
   }
 
+  // Set up a download for the notification's image if appropriate.
+  const base::DictionaryValue* optional_fields = notification.optional_fields();
+  if (optional_fields->HasKey(ui::notifications::kImageUrlKey)) {
+    string16 url;
+    optional_fields->GetString(ui::notifications::kImageUrlKey, &url);
+    if (!url.empty()) {
+      GetImageDownload(GURL(url)).AddCallback(
+          message_center::kNotificationPreferredImageSize, base::Bind(
+              &BalloonViewAsh::SetNotificationImage,
+              base::Unretained(this)));
+    }
+  }
+
   // Start the downloads.
   for (ImageDownloads::const_iterator i = downloads_.begin();
        i != downloads_.end();