Request focus in field when cc/bcc is toggled.

Bug: 3090788
Change-Id: I184dfe586199af9bcb016f60bf97bcd4382b4f73

src/com/android/email/activity/MessageCompose.java

@@ -1532,10 +1532,13 @@ public class MessageCompose extends Activity implements OnClickListener, OnFocus
     }
 
     private void showCcBccFields() {
+        if (mCcBccContainer.getVisibility() != View.VISIBLE) {
             mCcBccContainer.setVisibility(View.VISIBLE);
+            mCcView.requestFocus();
             UiUtilities.setVisibilitySafe(this, R.id.add_cc_bcc, View.INVISIBLE);
             invalidateOptionsMenu();
         }
+    }
 
     /**
      * Kick off a picker for whatever kind of MIME types we'll accept and let Android take over.