Clean up IconLoader.

chrome/browser/icon_loader_chromeos.cc

Index: chrome/browser/icon_loader_chromeos.cc
diff --git a/chrome/browser/icon_loader_chromeos.cc b/chrome/browser/icon_loader_chromeos.cc
index c2095407291dfb2dd7944992dbd8bf1ecc089a55..5875950f3e85433559ccecf5ce3d7169ed424eab 100644
--- a/chrome/browser/icon_loader_chromeos.cc
+++ b/chrome/browser/icon_loader_chromeos.cc
@@ -202,6 +202,8 @@ void IconLoader::ReadIcon() {
                                         IconSizeToDIPSize(icon_size_)));
   image_skia.MakeThreadSafe();
   image_.reset(new gfx::Image(image_skia));
-  target_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&IconLoader::NotifyDelegate, this));
+  target_task_runner_->PostTask(FROM_HERE,
+                                base::Bind(callback_, base::Unretained(this),
+                                           base::Passed(&image_), group_));
+  delete this;
 }