Expose getDefaultUserAgent to java

content/public/android/java/src/org/chromium/content/browser/ContentSettings.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java b/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
index f3b858bc20d4d80ac59c7b846fccea1f38989616..f31b538ec674e15c1ab9684d638f66bfc851f8d5 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
@@ -235,6 +235,14 @@ public class ContentSettings {
     }
 
     /**
+     * @returns the default User-Agent used by each ContentViewCore instance, i.e. unless
+     * overridden by {@link #setUserAgentString()}
+     */
+    public static String getDefaultUserAgent() {
+        return nativeGetDefaultUserAgent();
+    }
+
+    /**
      * Set the WebView's user-agent string. If the string "ua" is null or empty,
      * it will use the system default user-agent string.
      */