base: Fix/add header #ifndef guards.

base/android/java_handler_thread.h

 // Copyright 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 BASE_THREADING_JAVA_THREAD_H_
-#define BASE_THREADING_JAVA_THREAD_H_
+#ifndef BASE_ANDROID_JAVA_HANDLER_THREAD_H_
+#define BASE_ANDROID_JAVA_HANDLER_THREAD_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace base {
 
 class MessageLoop;
 class WaitableEvent;
@@ skipping 22 matching lines @@
   static bool RegisterBindings(JNIEnv* env);
 
  private:
   scoped_ptr<base::MessageLoop> message_loop_;
   ScopedJavaGlobalRef<jobject> java_thread_;
 };
 
 }  // namespace android
 }  // namespace base
 
-#endif  // BASE_THREADING_JAVA_THREAD_H_
+#endif  // BASE_ANDROID_JAVA_HANDLER_THREAD_H_