Replace image_messages.h with Mojo service

content/content_browser.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../device/vibration/vibration.gyp:device_vibration',
     '../device/vibration/vibration.gyp:device_vibration_mojo_bindings',
     '../device/battery/battery.gyp:device_battery',
     '../device/battery/battery.gyp:device_battery_mojo_bindings',
     '../google_apis/google_apis.gyp:google_apis',
+    '../mojo/mojo_base.gyp:mojo_geometry_lib',
+    '../mojo/mojo_base.gyp:mojo_url_type_converters',
     '../net/net.gyp:net',
     '../skia/skia.gyp:skia',
+    '../skia/skia.gyp:skia_mojo',
     '../sql/sql.gyp:sql',
     '../third_party/re2/re2.gyp:re2',
     '../third_party/zlib/google/zip.gyp:zip',
     '../third_party/zlib/zlib.gyp:zlib',
     '../third_party/WebKit/public/blink_headers.gyp:blink_headers',
     '../ui/accessibility/accessibility.gyp:accessibility',
     '../ui/accessibility/accessibility.gyp:ax_gen',
     '../ui/base/ui_base.gyp:ui_base',
     '../ui/base/ime/ui_base_ime.gyp:ui_base_ime',
     '../ui/events/events.gyp:blink',
@@ skipping 799 matching lines @@
       'browser/histogram_internals_request_job.h',
       'browser/histogram_message_filter.cc',
       'browser/histogram_message_filter.h',
       'browser/histogram_subscriber.h',
       'browser/histogram_synchronizer.cc',
       'browser/histogram_synchronizer.h',
       'browser/host_zoom_level_context.cc',
       'browser/host_zoom_level_context.h',
       'browser/host_zoom_map_impl.cc',
       'browser/host_zoom_map_impl.h',
+      'browser/image_downloader/image_downloader_dispatcher.cc',
+      'browser/image_downloader/image_downloader_dispatcher.h',
       'browser/indexed_db/indexed_db.h',
       'browser/indexed_db/indexed_db_active_blob_registry.cc',
       'browser/indexed_db/indexed_db_active_blob_registry.h',
       'browser/indexed_db/indexed_db_backing_store.cc',
       'browser/indexed_db/indexed_db_backing_store.h',
       'browser/indexed_db/indexed_db_blob_info.cc',
       'browser/indexed_db/indexed_db_blob_info.h',
       'browser/indexed_db/indexed_db_callbacks.cc',
       'browser/indexed_db/indexed_db_callbacks.h',
       'browser/indexed_db/indexed_db_class_factory.cc',
@@ skipping 1183 matching lines @@
         'browser/media/media_web_contents_observer.h',
       ],
     }],
     ['OS == "linux" and use_openssl==1', {
       'dependencies': [
         '../third_party/boringssl/boringssl.gyp:boringssl',
       ],
     }],
   ],
 }