Reland "arc-bridge: Move most methods to Mojo interfaces"

components/arc/BUILD.gn

Index: components/arc/BUILD.gn
diff --git a/components/arc/BUILD.gn b/components/arc/BUILD.gn
index 4f96906afccc50e2b64bb596e579912cac3b37be..b854d600bb41f0e0b3d2d98f7d3d3edd0b7ab17f 100644
--- a/components/arc/BUILD.gn
+++ b/components/arc/BUILD.gn
@@ -40,13 +40,21 @@ static_library("arc") {
 
 mojom("arc_bindings") {
   sources = [
+    "common/app.mojom",
     "common/arc_bridge.mojom",
+    "common/input.mojom",
+    "common/notifications.mojom",
+    "common/power.mojom",
+    "common/process.mojom",
+    "common/settings.mojom",
   ]
 }
 
 static_library("arc_test_support") {
   testonly = true
   sources = [
+    "test/fake_app_instance.cc",
+    "test/fake_app_instance.h",
     "test/fake_arc_bridge_instance.cc",
     "test/fake_arc_bridge_instance.h",
     "test/fake_arc_bridge_service.cc",
@@ -57,6 +65,7 @@ static_library("arc_test_support") {
     ":arc",
     ":arc_bindings",
     "//base",
+    "//mojo/common:common_base",
   ]
 }