Added GetNetworkOperatorID util func in net/base/net_util and a non-trivial implementation for Andr…

content/public/android/java/src/org/chromium/content/common/DeviceTelephonyInfo.java

Index: content/public/android/java/src/org/chromium/content/common/DeviceTelephonyInfo.java
diff --git a/content/public/android/java/src/org/chromium/content/common/DeviceTelephonyInfo.java b/content/public/android/java/src/org/chromium/content/common/DeviceTelephonyInfo.java
index 64a8fb448d556c8ab535605d748758203cc7927d..ce55400a183972f522c76e5f53503cc29a5311c3 100644
--- a/content/public/android/java/src/org/chromium/content/common/DeviceTelephonyInfo.java
+++ b/content/public/android/java/src/org/chromium/content/common/DeviceTelephonyInfo.java
@@ -27,7 +27,22 @@ public class DeviceTelephonyInfo {
      */
     @CalledByNative
     public String getNetworkCountryIso() {
-        return mTelManager.getNetworkCountryIso();
+        if (mTelManager != null) {
+            return mTelManager.getNetworkCountryIso();
+        }
+        return "";
+    }
+
+    /**
+     * @return MCC+MNC (mobile country code + mobile network code) as
+     * the numeric name of the current registered operator.
+     */
+    @CalledByNative
+    public String getNetworkOperator() {
+        if (mTelManager != null) {
+            return mTelManager.getNetworkOperator();
+        }
+        return "";
     }
 
     /**