cc: Add image decode control in the compositor.

cc/BUILD.gn

Index: cc/BUILD.gn
diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index df0083a26967d9389fe34d5938f94ff60c8ccb3f..1ef06be6d89dbc1a38c5e79be42720177be1f6d8 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn
@@ -288,6 +288,7 @@ component("cc") {
     "playback/clip_path_display_item.h",
     "playback/compositing_display_item.cc",
     "playback/compositing_display_item.h",
+    "playback/decoded_draw_image.h",
     "playback/discardable_image_map.cc",
     "playback/discardable_image_map.h",
     "playback/display_item.cc",
@@ -302,6 +303,7 @@ component("cc") {
     "playback/display_list_raster_source.h",
     "playback/display_list_recording_source.cc",
     "playback/display_list_recording_source.h",
+    "playback/draw_image.cc",
     "playback/draw_image.h",
     "playback/drawing_display_item.cc",
     "playback/drawing_display_item.h",
@@ -849,6 +851,7 @@ test("cc_unittests") {
     "test/mock_helper_unittest.cc",
     "test/ordered_simple_task_runner_unittest.cc",
     "test/test_web_graphics_context_3d_unittest.cc",
+    "tiles/image_decode_controller_unittest.cc",
     "tiles/picture_layer_tiling_set_unittest.cc",
     "tiles/picture_layer_tiling_unittest.cc",
     "tiles/tile_manager_unittest.cc",