Make image_decoder a Leaky LazyInstance

chrome/browser/bitmap_fetcher/bitmap_fetcher_browsertest.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.
 
 #include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/test/base/in_process_browser_test.h"
@@ skipping 123 matching lines @@
   SkBitmap image;
 
   // Put a real bitmap into "image".  2x2 bitmap of green 16 bit pixels.
   image.allocN32Pixels(2, 2);
   image.eraseColor(SK_ColorGREEN);
 
   BitmapFetcherTestDelegate delegate(kSyncCall);
 
   BitmapFetcher fetcher(url, &delegate);
 
-  fetcher.OnImageDecoded(NULL, image);
+  fetcher.OnImageDecoded(image);
 
   // Ensure image is marked as succeeded.
   EXPECT_TRUE(delegate.success());
 
   // Test that the image is what we expect.
   EXPECT_TRUE(gfx::BitmapsAreEqual(image, delegate.bitmap()));
 }
 
 IN_PROC_BROWSER_TEST_F(BitmapFetcherBrowserTest, OnURLFetchFailureTest) {
   GURL url("http://example.com/this-should-be-fetch-failure");
@@ skipping 37 matching lines @@
       net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE,
       net::LOAD_NORMAL);
 
   // Blocks until test delegate is notified via a callback.
   delegate.Wait();
 
   EXPECT_FALSE(delegate.success());
 }
 
 }  // namespace chrome