Finish offscreen canvas using FrameSinkMangerHost.

content/browser/BUILD.gn

Index: content/browser/BUILD.gn
diff --git a/content/browser/BUILD.gn b/content/browser/BUILD.gn
index 110260770c7f437909b6008e68234b9ae87e1d86..08f6783195cb006c7bdbf7197e2578b9be51b58e 100644
--- a/content/browser/BUILD.gn
+++ b/content/browser/BUILD.gn
@@ -135,7 +135,6 @@ source_set("browser") {
     "//third_party/WebKit/public:features",
     "//third_party/WebKit/public:image_resources",
     "//third_party/WebKit/public:mojo_bindings",
-    "//third_party/WebKit/public:offscreen_canvas_mojo_bindings",
     "//third_party/WebKit/public:resources",
     "//third_party/angle:angle_common",
     "//third_party/icu",
@@ -172,6 +171,7 @@ source_set("browser") {
   public_deps = [
     "//ipc",
     "//media/mojo/interfaces:remoting",
+    "//third_party/WebKit/public:offscreen_canvas_mojo_bindings",
     "//third_party/leveldatabase",
   ]
 
@@ -1231,8 +1231,6 @@ source_set("browser") {
     "renderer_host/media/video_capture_provider.h",
     "renderer_host/native_web_keyboard_event_aura.cc",
     "renderer_host/native_web_keyboard_event_mac.mm",
-    "renderer_host/offscreen_canvas_compositor_frame_sink_manager.cc",
-    "renderer_host/offscreen_canvas_compositor_frame_sink_manager.h",
     "renderer_host/offscreen_canvas_provider_impl.cc",
     "renderer_host/offscreen_canvas_provider_impl.h",
     "renderer_host/offscreen_canvas_surface_impl.cc",