Fixes to crash view

- Ensure that onPause of controller is called when the activity is
  paused.
- When a foreground tab crashes when the browser is paused we do not
  show the crash view.

Change-Id: Ide72f43c3d273b1c8d68856d1d01bbea00855b7c
diff --git a/src/com/android/browser/Controller.java b/src/com/android/browser/Controller.java
index 62dff92..c149a0b 100644
--- a/src/com/android/browser/Controller.java
+++ b/src/com/android/browser/Controller.java
@@ -758,7 +758,7 @@
             mVoiceResult = null;
         }
         if (current != null && current.hasCrashed) {
-            current.showCrashView();
+            current.replaceCrashView(current.getWebView(), current.getViewContainer());
         }
     }