Put code in //services/js in namespace js

services/js/pingpong_apptest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "services/js/test/js_application_test_base.h"
 #include "services/js/test/pingpong_service.mojom.h"
 
-namespace mojo {
+namespace js {
 namespace {
 
 class PingPongClientImpl : public PingPongClient {
  public:
   PingPongClientImpl() : last_pong_value_(0) {};
   ~PingPongClientImpl() override {};
 
   int16_t last_pong_value() const { return last_pong_value_; }
 
   // PingPongClient overrides.
@@ skipping 54 matching lines @@
 TEST_F(JSPingPongTest, PingTargetApp) {
   bool returned_value = false;
   PingTargetCallback callback(&returned_value);
   pingpong_service_->PingTarget(JSAppURL("pingpong_target.js"), 10, callback);
   EXPECT_TRUE(pingpong_service_.WaitForIncomingMethodCall());
   EXPECT_TRUE(returned_value);
   pingpong_service_->Quit();
 }
 
 }  // namespace
-}  // namespace mojo
+}  // namespace js