Cleanup: Fix content header include guards.

content/public/test/nested_message_pump_android.h

Index: content/public/test/nested_message_pump_android.h
diff --git a/content/public/test/nested_message_pump_android.h b/content/public/test/nested_message_pump_android.h
index 1f6eb0f2449e9022b3a40944ad976c423b377e72..4346c83c1952e600c12e6388d7b14cb6db9f1152 100644
--- a/content/public/test/nested_message_pump_android.h
+++ b/content/public/test/nested_message_pump_android.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_PUBLIC_TEST_NESTED_MESSAGE_PUMP_ANDROID_
-#define CONTENT_PUBLIC_TEST_NESTED_MESSAGE_PUMP_ANDROID_
+#ifndef CONTENT_PUBLIC_TEST_NESTED_MESSAGE_PUMP_ANDROID_H_
+#define CONTENT_PUBLIC_TEST_NESTED_MESSAGE_PUMP_ANDROID_H_
 
 #include "base/android/jni_android.h"
 #include "base/compiler_specific.h"
@@ -40,4 +40,4 @@ class NestedMessagePumpAndroid : public base::MessagePumpForUI {
 
 }  // namespace content
 
-#endif  // CONTENT_PUBLIC_TEST_NESTED_MESSAGE_PUMP_ANDROID_
+#endif  // CONTENT_PUBLIC_TEST_NESTED_MESSAGE_PUMP_ANDROID_H_