Close cab before showing ComboPage

       http://b/issue?id=3312056
       Close action mode before showing the ComboPage

Change-Id: I5f3ac135fb4fd72bb0398f713bd12351fab072d0
diff --git a/src/com/android/browser/Controller.java b/src/com/android/browser/Controller.java
index 23594f2..02f1e7c 100644
--- a/src/com/android/browser/Controller.java
+++ b/src/com/android/browser/Controller.java
@@ -1111,6 +1111,10 @@
         if (mTabControl.getCurrentWebView() == null) {
             return;
         }
+        // clear action mode
+        if (isInCustomActionMode()) {
+            endActionMode();
+        }
         Bundle extras = new Bundle();
         // Disable opening in a new window if we have maxed out the windows
         extras.putBoolean(BrowserBookmarksPage.EXTRA_DISABLE_WINDOW,