Create a RegisterViewAssociate method in ViewManager

services/ui/view_manager/BUILD.gn

Index: services/ui/view_manager/BUILD.gn
diff --git a/services/ui/view_manager/BUILD.gn b/services/ui/view_manager/BUILD.gn
index b55b4292e4d0a11e449226da39d985bae2700956..388983cf295438fbf6cba45b60ffbc640ef7fc1a 100644
--- a/services/ui/view_manager/BUILD.gn
+++ b/services/ui/view_manager/BUILD.gn
@@ -47,3 +47,30 @@ mojo_native_application("view_manager") {
     "//mojo/services/ui/views/interfaces",
   ]
 }
+
+mojo_native_application("view_manager_apptests") {
+  output_name = "view_manager_apptests"
+
+  testonly = true
+
+  sources = [
+    "tests/view_manager_test.cc",
+  ]
+
+  deps = [
+    "//base",
+    "//mojo/application",
+    "//mojo/application:test_support",
+    "//mojo/common",
+    "//mojo/common:tracing_impl",
+    "//mojo/converters/geometry",
+    "//mojo/environment:chromium",
+    "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/bindings:bindings",
+    "//mojo/services/geometry/cpp",
+    "//mojo/services/gfx/composition/cpp",
+    "//mojo/services/gfx/composition/interfaces",
+    "//mojo/services/ui/views/cpp",
+    "//mojo/services/ui/views/interfaces",
+  ]
+}