Implement the logic to kick off image decoding jobs for TileManager

cc/cc.gyp

 # 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.
 
 {
   'variables': {
     'cc_source_files': [
       'active_animation.cc',
       'active_animation.h',
       'animation_curve.cc',
@@ skipping 53 matching lines @@
       'graphics_context.h',
       'hash_pair.h',
       'heads_up_display_layer.cc',
       'heads_up_display_layer.h',
       'heads_up_display_layer_impl.cc',
       'heads_up_display_layer_impl.h',
       'image_layer_updater.cc',
       'image_layer_updater.h',
       'image_layer.cc',
       'image_layer.h',
+      'image.cc',
+      'image.h',
       'input_handler.h',
       'io_surface_draw_quad.cc',
       'io_surface_draw_quad.h',
       'io_surface_layer.cc',
       'io_surface_layer.h',
       'io_surface_layer_impl.cc',
       'io_surface_layer_impl.h',
       'keyframed_animation_curve.cc',
       'keyframed_animation_curve.h',
       'layer.cc',
@@ skipping 209 matching lines @@
       ],
       'all_dependent_settings': {
         'include_dirs': [
           # Needed for <public/WebTransformationMatrix.h> in layer.h
           '<(webkit_src_dir)/Source/Platform/chromium',
         ],
       }
     },
   ],
 }