Use stricter type checking in UMA_HISTOGRAM_ENUMERATION

base/android/library_loader/library_loader_hooks.cc

 // 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.
 
 #include "base/android/library_loader/library_loader_hooks.h"
 
 #include "base/android/command_line_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/library_loader/library_load_from_apk_status_codes.h"
 #include "base/android/library_loader/library_prefetcher.h"
@@ skipping 106 matching lines @@
     histogram_code = load_at_fixed_address_failed
                      ? LOW_MEMORY_LFA_BACKOFF_USED : LOW_MEMORY_LFA_SUCCESS;
   } else {
     histogram_code = NORMAL_LRA_SUCCESS;
   }
   UMA_HISTOGRAM_ENUMERATION("ChromiumAndroidLinker.BrowserStates",
                             histogram_code,
                             MAX_BROWSER_HISTOGRAM_CODE);
 
   // Record the device support for loading a library directly from the APK file.
-  UMA_HISTOGRAM_ENUMERATION("ChromiumAndroidLinker.LibraryLoadFromApkStatus",
-                            library_load_from_apk_status,
-                            LIBRARY_LOAD_FROM_APK_STATUS_CODES_MAX);
+  UMA_HISTOGRAM_ENUMERATION(
+      "ChromiumAndroidLinker.LibraryLoadFromApkStatus",
+      static_cast<LibraryLoadFromApkStatusCodes>(library_load_from_apk_status),
+      LIBRARY_LOAD_FROM_APK_STATUS_CODES_MAX);
 
   // Record how long it took to load the shared libraries.
   UMA_HISTOGRAM_TIMES("ChromiumAndroidLinker.BrowserLoadTime",
                       base::TimeDelta::FromMilliseconds(library_load_time_ms));
 }
 
 static void RecordLibraryPreloaderBrowserHistogram(
     JNIEnv* env,
     const JavaParamRef<jobject>& jcaller,
     jint status) {
@@ skipping 75 matching lines @@
   return static_cast<LibraryProcessType>(
       Java_LibraryLoader_getLibraryProcessType(env));
 }
 
 void InitAtExitManager() {
   g_at_exit_manager = new base::AtExitManager();
 }
 
 }  // namespace android
 }  // namespace base