Fix header guard and namespace in android_webview

android_webview/browser/aw_contents_lifecycle_notifier.h

Index: android_webview/browser/aw_contents_lifecycle_notifier.h
diff --git a/android_webview/browser/aw_contents_lifecycle_notifier.h b/android_webview/browser/aw_contents_lifecycle_notifier.h
index fc2614f969f3a77ce4f68ac6021213c66ac1dcce..a2570d20cd5785bf31ab605434ec1aa3d20ceb1c 100644
--- a/android_webview/browser/aw_contents_lifecycle_notifier.h
+++ b/android_webview/browser/aw_contents_lifecycle_notifier.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 ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_LIFECYCLE_OBSERVER_H_
-#define ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_LIFECYCLE_OBSERVER_H_
+#ifndef ANDROID_WEBVIEW_BROWSER_AW_CONTENTS_LIFECYCLE_NOTIFIER_H_
+#define ANDROID_WEBVIEW_BROWSER_AW_CONTENTS_LIFECYCLE_NOTIFIER_H_
 
 #include "base/android/jni_android.h"
 #include "base/macros.h"
@@ -21,4 +21,4 @@ class AwContentsLifecycleNotifier {
 
 }  // namespace android_webview
 
-#endif
+#endif  // ANDROID_WEBVIEW_BROWSER_AW_CONTENTS_LIFECYCLE_NOTIFIER_H_