Fix bug 5341804 - Unable to type into the find on page CAB

Standalone action mode windows should be focusable.

Change-Id: I7ce23f1028eb0d0d36bdb287589a6018dc178580
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindow.java b/policy/src/com/android/internal/policy/impl/PhoneWindow.java
index 1b7271d..9a3031d 100644
--- a/policy/src/com/android/internal/policy/impl/PhoneWindow.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindow.java
@@ -2135,6 +2135,7 @@
                                 com.android.internal.R.attr.actionModePopupWindowStyle);
                         mActionModePopup.setLayoutInScreenEnabled(true);
                         mActionModePopup.setLayoutInsetDecor(true);
+                        mActionModePopup.setFocusable(true);
                         mActionModePopup.setWindowLayoutType(
                                 WindowManager.LayoutParams.TYPE_APPLICATION);
                         mActionModePopup.setContentView(mActionModeView);