Enable mojo js tests which depend on mojom.js files in gen/.

mojo/apps/js/test/run_apps_js_tests.cc

Index: mojo/apps/js/test/run_apps_js_tests.cc
diff --git a/mojo/apps/js/test/run_apps_js_tests.cc b/mojo/apps/js/test/run_apps_js_tests.cc
index 5037f8a3526c2793d3d42a1625188fcc10866a36..de964e7dde34904c163b3ca7c7239befa8678f1e 100644
--- a/mojo/apps/js/test/run_apps_js_tests.cc
+++ b/mojo/apps/js/test/run_apps_js_tests.cc
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 #include "base/file_util.h"
+#include "base/files/file_path.h"
 #include "base/path_service.h"
-#include "build/build_config.h"
 #include "gin/modules/console.h"
 #include "gin/modules/module_registry.h"
 #include "gin/modules/timer.h"
@@ -14,6 +14,7 @@
 #include "mojo/apps/js/bindings/threading.h"
 #include "mojo/bindings/js/core.h"
 #include "mojo/bindings/js/unicode.h"
+#include "mojo/common/test/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
@@ -50,23 +51,31 @@ void RunTest(std::string test, bool run_until_idle) {
 
 // TODO(abarth): Should we autogenerate these stubs from GYP?
 
-// http://crbug.com/351214
-#if defined(OS_POSIX)
-#define MAYBE_sample_test DISABLED_sample_test
-#else
-#define MAYBE_sample_test sample_test
-#endif
-TEST(JSTest, MAYBE_sample_test) {
+TEST(JSTest, sample_test) {
+  // TODO(yzshen): Remove this check once isolated tests are supported on the
+  // Chromium waterfall. (http://crbug.com/351214)
+  const base::FilePath test_file_path(
+      test::GetFilePathForJSResource(
+          "mojo/public/interfaces/bindings/tests/sample_service.mojom"));
+  if (!base::PathExists(test_file_path)) {
+    LOG(WARNING) << "Mojom binding files don't exist. Skipping the test.";
+    return;
+  }
+
   RunTest("sample_service_unittests.js", true);
 }
 
-// http://crbug.com/351214
-#if defined(OS_POSIX)
-#define MAYBE_connection DISABLED_connection
-#else
-#define MAYBE_connection connection
-#endif
-TEST(JSTest, MAYBE_connection) {
+TEST(JSTest, connection) {
+  // TODO(yzshen): Remove this check once isolated tests are supported on the
+  // Chromium waterfall. (http://crbug.com/351214)
+  const base::FilePath test_file_path(
+      test::GetFilePathForJSResource(
+          "mojo/public/interfaces/bindings/tests/sample_service.mojom"));
+  if (!base::PathExists(test_file_path)) {
+    LOG(WARNING) << "Mojom binding files don't exist. Skipping the test.";
+    return;
+  }
+
   RunTest("connection_unittests.js", false);
 }