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 50f7858fb988cfc504cd983e900310b21e909c60..9d3af1f2c526b7b70478b99cf817fc63fecd7a23 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn
@@ -292,6 +292,7 @@ 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",
@@ -306,6 +307,7 @@ 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",
@@ -870,6 +872,7 @@ 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",