Add UMA for testing whether the Chromium library was page aligned in the APK file.

base/android/library_loader/library_load_from_apk_status_codes.h

 // Copyright 2014 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_ANDROID_LIBRARY_LOAD_FROM_APK_STATUS_CODES_H_
 #define BASE_ANDROID_LIBRARY_LOAD_FROM_APK_STATUS_CODES_H_
 
 namespace base {
 namespace android {
 
 namespace {
 
 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.base.library_loader
 enum LibraryLoadFromApkStatusCodes {
   // The loader was unable to determine whether the functionality is supported.
   LIBRARY_LOAD_FROM_APK_STATUS_CODES_UNKNOWN = 0,
 
   // The device does not support loading a library directly from the APK file.
   LIBRARY_LOAD_FROM_APK_STATUS_CODES_NOT_SUPPORTED = 1,
 
   // The device supports loading a library directly from the APK file.
   LIBRARY_LOAD_FROM_APK_STATUS_CODES_SUPPORTED = 2,
 
-  // A library was successfully loaded directly from the APK file.
+  // The Chromium library was successfully loaded directly from the APK file.
   LIBRARY_LOAD_FROM_APK_STATUS_CODES_SUCCESSFUL = 3,
 
+  // The Chromium library was not page aligned in the APK file.
+  LIBRARY_LOAD_FROM_APK_STATUS_CODES_NOT_ALIGNED = 4,
+
   // End sentinel.
-  LIBRARY_LOAD_FROM_APK_STATUS_CODES_MAX = 4,
+  LIBRARY_LOAD_FROM_APK_STATUS_CODES_MAX = 5,
 };
 
 }  // namespace
 
 }  // namespace android
 }  // namespace base
 
 #endif  // BASE_ANDROID_LIBRARY_LOAD_FROM_APK_STATUS_CODES_H_