Move content_shell and content_browsertests code into the content namespace.

content/shell/android/shell_library_loader.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/debug/debugger.h"
 #include "base/logging.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_registrar.h"
 #include "content/public/app/android_library_loader_hooks.h"
@@ skipping 14 matching lines @@
   if (!content::RegisterLibraryLoaderEntryHook(env)) {
     return -1;
   }
 
   // To be called only from the UI thread.  If loading the library is done on
   // a separate thread, this should be moved elsewhere.
   if (!base::android::RegisterNativeMethods(env, kRegistrationMethods,
                                             arraysize(kRegistrationMethods)))
     return -1;
 
-  content::SetContentMainDelegate(new ShellMainDelegate());
+  content::SetContentMainDelegate(new content::ShellMainDelegate());
 
   return JNI_VERSION_1_4;
 }