Pass the ImageDecoder to the ImageFetcher at creation time.

components/image_fetcher/image_fetcher_impl.cc

Index: components/image_fetcher/image_fetcher_impl.cc
diff --git a/chrome/browser/search/suggestions/image_fetcher_impl.cc b/components/image_fetcher/image_fetcher_impl.cc
similarity index 90%
rename from chrome/browser/search/suggestions/image_fetcher_impl.cc
rename to components/image_fetcher/image_fetcher_impl.cc
index 9d046f0a05ba7e381075b2a7b91af406c78d8b55..ed0c15c87d78ca7982a87c2c45974a96b69849a4 100644
--- a/chrome/browser/search/suggestions/image_fetcher_impl.cc
+++ b/components/image_fetcher/image_fetcher_impl.cc
@@ -2,23 +2,21 @@
 // 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 <string>
 
 #include "base/bind.h"
-#include "chrome/browser/search/suggestions/image_decoder_impl.h"
-#include "content/public/browser/browser_thread.h"
 #include "net/base/load_flags.h"
 #include "net/url_request/url_request_context_getter.h"
-#include "ui/gfx/image/image.h"
 
-namespace suggestions {
+namespace image_fetcher {
 
 ImageFetcherImpl::ImageFetcherImpl(
+    image_fetcher::ImageDecoder* image_decoder,
     net::URLRequestContextGetter* url_request_context)
     : delegate_(nullptr), url_request_context_(url_request_context),
-      image_decoder_(new suggestions::ImageDecoderImpl()),
+      image_decoder_(image_decoder),
       image_data_fetcher_(
           new image_fetcher::ImageDataFetcher(url_request_context_)) {
 }
@@ -97,4 +95,4 @@ void ImageFetcherImpl::OnImageDecoded(const GURL& image_url,
   pending_net_requests_.erase(image_iter);
 }
 
-}  // namespace suggestions
+}  // namespace image_fetcher