Pass the ImageDecoder to the ImageFetcher at creation time.

chrome/browser/search/suggestions/image_fetcher_impl_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/search/suggestions/image_fetcher_impl.h"
+#include "components/image_fetcher/image_fetcher_impl.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/test/base/in_process_browser_test.h"
+#include "components/image_fetcher/image_decoder_impl.h"
 #include "components/image_fetcher/image_fetcher_delegate.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/image/image.h"
 #include "url/gurl.h"
 
 class SkBitmap;
 
 using image_fetcher::ImageFetcher;
 using image_fetcher::ImageFetcherDelegate;
@@ skipping 42 matching lines @@
     test_server_.ServeFilesFromSourceDirectory(base::FilePath(kDocRoot));
   }
 
   void SetUpInProcessBrowserTestFixture() override {
     ASSERT_TRUE(test_server_.Start());
     InProcessBrowserTest::SetUpInProcessBrowserTestFixture();
   }
 
   ImageFetcherImpl* CreateImageFetcher() {
     ImageFetcherImpl* fetcher =
-        new ImageFetcherImpl(browser()->profile()->GetRequestContext());
+        new ImageFetcherImpl(
+            base::MakeUnique<suggestions::ImageDecoderImpl>(),
+            browser()->profile()->GetRequestContext());
     fetcher->SetImageFetcherDelegate(&delegate_);
     return fetcher;
   }
 
   void OnImageAvailable(base::RunLoop* loop,
                         const std::string& id,
                         const gfx::Image& image) {
     if (!image.IsEmpty()) {
       num_callback_valid_called_++;
     } else {
@@ skipping 50 matching lines @@
   GURL invalid_image_url(test_server_.GetURL(kInvalidImagePath).spec());
   StartOrQueueNetworkRequestHelper(invalid_image_url);
 
   EXPECT_EQ(0, num_callback_valid_called_);
   EXPECT_EQ(1, num_callback_null_called_);
   EXPECT_EQ(0, delegate_.num_delegate_valid_called());
   EXPECT_EQ(1, delegate_.num_delegate_null_called());
 }
 
 }  // namespace suggestions