Closing last tab clears state

 When closing the last tab, clear the crash recovery state. This
 prevents the issue where closing the last tab and re-launching
 browser would recover the last tab anyway

Change-Id: Ia080aca5401fbc65e62a7651cb17cf9cd2e25ed8
diff --git a/src/com/android/browser/Controller.java b/src/com/android/browser/Controller.java
index 7512949..9659063 100644
--- a/src/com/android/browser/Controller.java
+++ b/src/com/android/browser/Controller.java
@@ -2293,6 +2293,7 @@
         // hide combo view if open
         removeComboView();
         if (mTabControl.getTabCount() == 1) {
+            CrashRecoveryHandler.clearState(mActivity);
             mActivity.finish();
             return;
         }