Whitelist known StrictMode violations to be fixed.

chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
index 81abafafc0b3adf65fef38cd4d3603fa47fed88c..6721711a59c4f0d7f92267cf3d2a24520bb7345b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
@@ -6,6 +6,7 @@ package org.chromium.chrome.browser.preferences;
 
 import android.content.Context;
 import android.content.SharedPreferences;
+import android.os.StrictMode;
 import android.preference.PreferenceManager;
 import android.util.Log;
 
@@ -123,7 +124,14 @@ public final class PrefServiceBridge {
             // images disabled.
             setContentSettingEnabled(ContentSettingsType.CONTENT_SETTINGS_TYPE_IMAGES, true);
         }
-        preferences.edit().putInt(MIGRATION_PREF_KEY, MIGRATION_CURRENT_VERSION).commit();
+        // Temporarily allowing disk access. TODO: Fix. See http://crbug.com/577183
+        StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
+        StrictMode.allowThreadDiskWrites();
+        try {
+            preferences.edit().putInt(MIGRATION_PREF_KEY, MIGRATION_CURRENT_VERSION).commit();
+        } finally {
+            StrictMode.setThreadPolicy(oldPolicy);
+        }
     }
 
     /**