Remove unneeded IconLoader::image_

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 35539fd35dddb1e5c0dec5cdef781a0ab31971fe..52ae44d7b2d49be7f0d268e3dbec62355062d325 100644
--- a/chrome/browser/icon_loader_chromeos.cc
+++ b/chrome/browser/icon_loader_chromeos.cc
@@ -14,6 +14,7 @@
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
@@ -202,8 +203,8 @@ void IconLoader::ReadIcon() {
   gfx::ImageSkia image_skia(ResizeImage(*(rb.GetImageNamed(idr)).ToImageSkia(),
                                         IconSizeToDIPSize(icon_size_)));
   image_skia.MakeThreadSafe();
-  image_.reset(new gfx::Image(image_skia));
+  std::unique_ptr<gfx::Image> image = base::MakeUnique<gfx::Image>(image_skia);
   target_task_runner_->PostTask(
-      FROM_HERE, base::Bind(callback_, base::Passed(&image_), group_));
+      FROM_HERE, base::Bind(callback_, base::Passed(&image), group_));
   delete this;
 }