Implement GpuArcVideoService for arc video accelerator

components/arc/BUILD.gn

Index: components/arc/BUILD.gn
diff --git a/components/arc/BUILD.gn b/components/arc/BUILD.gn
index 6740c3f5cc0725cc789681224d23586fc8a381e5..b19324748fd06ab45f01ae0896b731a0ff86fdd4 100644
--- a/components/arc/BUILD.gn
+++ b/components/arc/BUILD.gn
@@ -22,6 +22,9 @@ static_library("arc") {
     "power/arc_power_bridge.h",
     "settings/arc_settings_bridge.cc",
     "settings/arc_settings_bridge.h",
+    "video/arc_video_bridge.cc",
+    "video/arc_video_bridge.h",
+    "video/video_host_delegate.h",
   ]
 
   deps = [
@@ -52,6 +55,7 @@ mojom("arc_bindings") {
     "common/power.mojom",
     "common/process.mojom",
     "common/settings.mojom",
+    "common/video.mojom",
   ]
 }