Fixed URL logging in Incognito tab

 Bug: 3194842
 Fixed an instance of URL logging when in an incognito tab.

Change-Id: I8aae48314cc59e08f94db48546cd5a74eef9e69c
diff --git a/src/com/android/browser/Tab.java b/src/com/android/browser/Tab.java
index a048c2d..3647a20 100644
--- a/src/com/android/browser/Tab.java
+++ b/src/com/android/browser/Tab.java
@@ -497,8 +497,10 @@
 
         @Override
         public void onPageFinished(WebView view, String url) {
-            LogTag.logPageFinishedLoading(
-                    url, SystemClock.uptimeMillis() - mLoadStartTime);
+            if (!isPrivateBrowsingEnabled()) {
+                LogTag.logPageFinishedLoading(
+                        url, SystemClock.uptimeMillis() - mLoadStartTime);
+            }
             mInPageLoad = false;
 
             mWebViewController.onPageFinished(Tab.this, url);