Restructure public side of view_manager service.

mojo/services/view_manager/public/cpp/tests/BUILD.gn

Index: mojo/services/view_manager/public/cpp/tests/BUILD.gn
diff --git a/mojo/services/public/cpp/view_manager/tests/BUILD.gn b/mojo/services/view_manager/public/cpp/tests/BUILD.gn
similarity index 82%
rename from mojo/services/public/cpp/view_manager/tests/BUILD.gn
rename to mojo/services/view_manager/public/cpp/tests/BUILD.gn
index c4a117a5862f625f7af1b62de58fe47cd8b40415..ca4aa1d3510b6cf7cadece2b476fe753c05ba908 100644
--- a/mojo/services/public/cpp/view_manager/tests/BUILD.gn
+++ b/mojo/services/view_manager/public/cpp/tests/BUILD.gn
@@ -18,14 +18,14 @@ test("mojo_view_manager_lib_unittests") {
     "//mojo/environment:chromium",
     "//mojo/public/cpp/application",
     "//mojo/services/public/cpp/geometry",
-    "//mojo/services/public/cpp/view_manager",
     "//mojo/services/public/interfaces/geometry",
-    "//mojo/services/public/interfaces/view_manager",
+    "//mojo/services/view_manager/public/cpp",
+    "//mojo/services/view_manager/public/interfaces",
     "//shell:test_support",
     "//testing/gtest",
   ]
   if (use_aura) {
-    deps += [ "//mojo/services/public/cpp/view_manager/lib:run_unittests" ]
+    deps += [ "//mojo/services/view_manager/public/cpp/lib:run_unittests" ]
   } else {
     deps += [ "//mojo/edk/test:run_all_unittests" ]
   }