Fix BASE_EXPORT keyword position in activity_status.h.

base/android/activity_status.h

Index: base/android/activity_status.h
diff --git a/base/android/activity_status.h b/base/android/activity_status.h
index 554340cc6f821b7b19244b44e07fad5fd36191a4..7975a789cd09d0fff73378dceebbdf15b7229943 100644
--- a/base/android/activity_status.h
+++ b/base/android/activity_status.h
@@ -8,6 +8,7 @@
 #include <jni.h>
 
 #include "base/android/jni_android.h"
+#include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/singleton.h"
@@ -49,7 +50,7 @@ enum ActivityState {
 //    // Stop listening.
 //    delete my_listener
 //
-BASE_EXPORT class ActivityStatus {
+class BASE_EXPORT ActivityStatus {
  public:
   typedef base::Callback<void(ActivityState)> StateChangeCallback;