[Android] Refactor the native test wrappers. (RELAND)

testing/android/native_test/native_test_util.h

 // Copyright (c) 2013 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.
 
 #ifndef TESTING_ANDROID_NATIVE_TEST_UTIL_
 #define TESTING_ANDROID_NATIVE_TEST_UTIL_
 
 #include <stdio.h>
 #include <string>
 #include <vector>
 
 // Helper methods for setting up environment for running gtest tests
 // inside an APK.
 namespace testing {
-namespace native_test_util {
+namespace android {
 
 class ScopedMainEntryLogger {
  public:
   ScopedMainEntryLogger() {
     printf(">>ScopedMainEntryLogger\n");
   }
 
   ~ScopedMainEntryLogger() {
     printf("<<ScopedMainEntryLogger\n");
     fflush(stdout);
     fflush(stderr);
   }
 };
 
 void ParseArgsFromString(
     const std::string& command_line, std::vector<std::string>* args);
 void ParseArgsFromCommandLineFile(
     const char* path, std::vector<std::string>* args);
 int ArgsToArgv(const std::vector<std::string>& args, std::vector<char*>* argv);
 
-}  // namespace native_test_util
+}  // namespace android
 }  // namespace testing
 
 #endif  // TESTING_ANDROID_NATIVE_TEST_UTIL_