Fix issue when navigating on Snapshot Tab

- When navigating on snapshot tab, clicking on the links
  in the snapshot tab causes navigation in the same tab to occur
  This is wrong behaviour in terms of user experience and would
  also cause issues with Edge navigation

Change-Id: I9b2f7eb27aed0209f0245ab71ee69fe087eb9161
diff --git a/src/com/android/browser/Controller.java b/src/com/android/browser/Controller.java
index dbbc164..c546f48 100644
--- a/src/com/android/browser/Controller.java
+++ b/src/com/android/browser/Controller.java
@@ -1058,7 +1058,9 @@
 
     @Override
     public boolean shouldOverrideUrlLoading(Tab tab, WebView view, String url) {
-        return mUrlHandler.shouldOverrideUrlLoading(tab, view, url);
+        // if tab is snapshot tab we want to prevent navigation from occuring
+        // since snapshot tab opens a new tab with the url
+        return  goLive(url) || mUrlHandler.shouldOverrideUrlLoading(tab, view, url);
     }
 
     @Override
@@ -2149,9 +2151,10 @@
                 break;
 
             case R.id.snapshot_go_live:
-                goLive();
-                return true;
-
+                // passing null to distinguish between
+                // "go live" button and navigating a web page
+                //  on a snapshot tab
+                return goLive(null);
             case R.id.share_page_menu_id:
                 Tab currentTab = mTabControl.getCurrentTab();
                 if (null == currentTab) {
@@ -2360,23 +2363,18 @@
         }
     }
 
-    private void goLive() {
-        if (!getCurrentTab().isSnapshot()) return;
+    public boolean goLive(String url) {
+        if (!getCurrentTab().isSnapshot())
+            return false;
         SnapshotTab t = (SnapshotTab) getCurrentTab();
-        String url = t.getLiveUrl();
-        boolean onlySingleTabRemaining = false;
-        if (mTabControl.getTabCount() > 1) {
-            // destroy the old snapshot tab
-            closeCurrentTab();
-        } else {
-            onlySingleTabRemaining = true;
-        }
-        Tab liveTab =  createNewTab(false, true, false);
-        if (onlySingleTabRemaining) {
+
+        if (url == null) { // "go live" button was clicked
+            url = t.getLiveUrl();
             closeTab(t);
         }
-
+        Tab liveTab = createNewTab(false, true, false);
         loadUrl(liveTab, url);
+        return true;
     }
 
     private void showExitDialog(final Activity activity) {