arc: Partially migrate mojo types

components/arc/BUILD.gn

Index: components/arc/BUILD.gn
diff --git a/components/arc/BUILD.gn b/components/arc/BUILD.gn
index 78e34d439c431e2b35ce63bbacb50d7f11ed1e35..7bb6f39296edeeb41b1985172bd94373f96ce3df 100644
--- a/components/arc/BUILD.gn
+++ b/components/arc/BUILD.gn
@@ -71,7 +71,6 @@ static_library("arc") {
 
   public_deps = [
     ":arc_base",
-    ":arc_bindings",
   ]
 
   deps = [
@@ -123,19 +122,13 @@ static_library("arc_base") {
   ]
 }
 
-mojom("arc_bindings") {
+# TODO(crbug.com/662510): Remove this altogether.
+mojom("arc_bindings_old_types") {
   sources = [
     "common/app.mojom",
-    "common/arc_bridge.mojom",
-    "common/audio.mojom",
-    "common/auth.mojom",
     "common/bitmap.mojom",
     "common/bluetooth.mojom",
-    "common/boot_phase_monitor.mojom",
-    "common/clipboard.mojom",
-    "common/crash_collector.mojom",
     "common/enterprise_reporting.mojom",
-    "common/file_system.mojom",
     "common/ime.mojom",
     "common/intent_helper.mojom",
     "common/metrics.mojom",
@@ -163,6 +156,23 @@ mojom("arc_bindings") {
   use_new_wrapper_types = false
 }
 
+mojom("arc_bindings") {
+  sources = [
+    "common/arc_bridge.mojom",
+    "common/audio.mojom",
+    "common/auth.mojom",
+    "common/boot_phase_monitor.mojom",
+    "common/clipboard.mojom",
+    "common/crash_collector.mojom",
+    "common/file_system.mojom",
+  ]
+
+  public_deps = [
+    ":arc_bindings_old_types",
+    "//mojo/common:common_custom_types",
+  ]
+}
+
 static_library("arc_test_support") {
   testonly = true
   sources = [
@@ -182,10 +192,11 @@ static_library("arc_test_support") {
     "test/fake_policy_instance.h",
   ]
 
-  deps = [
+  public_deps = [
     ":arc",
-    ":arc_base",
-    ":arc_bindings",
+  ]
+
+  deps = [
     "//base",
     "//mojo/common:common_base",
   ]
@@ -209,8 +220,6 @@ source_set("unit_tests") {
   ]
 
   deps = [
-    ":arc",
-    ":arc_bindings",
     ":arc_test_support",
     "//base",
     "//chromeos",