Convert ManifestManager IPCs to Mojo.

third_party/WebKit/public/BUILD.gn

Index: third_party/WebKit/public/BUILD.gn
diff --git a/third_party/WebKit/public/BUILD.gn b/third_party/WebKit/public/BUILD.gn
index bc8ecd3d1ece267751d078e6cc24ef9bca845329..40fb38d0d9d3efdeddd585cbfd4567f0662ddfe9 100644
--- a/third_party/WebKit/public/BUILD.gn
+++ b/third_party/WebKit/public/BUILD.gn
@@ -176,6 +176,8 @@ mojom("mojo_bindings") {
     "platform/modules/bluetooth/web_bluetooth.mojom",
     "platform/modules/geolocation/geolocation.mojom",
     "platform/modules/imagecapture/image_capture.mojom",
+    "platform/modules/manifest/manifest.mojom",
+    "platform/modules/manifest/manifest_manager.mojom",
     "platform/modules/notifications/notification.mojom",
     "platform/modules/permissions/permission.mojom",
     "platform/modules/permissions/permission_status.mojom",
@@ -186,6 +188,8 @@ mojom("mojo_bindings") {
   ]
   public_deps = [
     ":android_mojo_bindings",
+    "//ui/gfx/geometry/mojo",
+    "//url/mojo:url_mojom_gurl",
   ]
 }