Move common ImageFetcher component files to core/

components/image_fetcher/core/image_fetcher.h

Index: components/image_fetcher/core/image_fetcher.h
diff --git a/components/image_fetcher/image_fetcher.h b/components/image_fetcher/core/image_fetcher.h
similarity index 89%
rename from components/image_fetcher/image_fetcher.h
rename to components/image_fetcher/core/image_fetcher.h
index 0fe7ea4802a81b950feeba719e6bd6c60fced7b2..e1b121b3e338ca9045343a6e92103fe1c9db71e6 100644
--- a/components/image_fetcher/image_fetcher.h
+++ b/components/image_fetcher/core/image_fetcher.h
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_IMAGE_FETCHER_IMAGE_FETCHER_H_
-#define COMPONENTS_IMAGE_FETCHER_IMAGE_FETCHER_H_
+#ifndef COMPONENTS_IMAGE_FETCHER_CORE_IMAGE_FETCHER_H_
+#define COMPONENTS_IMAGE_FETCHER_CORE_IMAGE_FETCHER_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "components/data_use_measurement/core/data_use_user_data.h"
-#include "components/image_fetcher/image_fetcher_delegate.h"
+#include "components/image_fetcher/core/image_fetcher_delegate.h"
 #include "url/gurl.h"
 
 namespace gfx {
@@ -67,4 +67,4 @@ class ImageFetcher {
 
 }  // namespace image_fetcher
 
-#endif  // COMPONENTS_IMAGE_FETCHER_IMAGE_FETCHER_H_
+#endif  // COMPONENTS_IMAGE_FETCHER_CORE_IMAGE_FETCHER_H_