Hook up PpapiPermissions in more places.

ppapi/shared_impl/ppapi_permissions.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/shared_impl/ppapi_permissions.h"
 
 #include "base/logging.h"
 
 namespace ppapi {
 
 PpapiPermissions::PpapiPermissions() : permissions_(0) {
 }
 
 PpapiPermissions::PpapiPermissions(uint32 perms) : permissions_(perms) {
 }
 
 PpapiPermissions::~PpapiPermissions() {
 }
 
 // static
 PpapiPermissions PpapiPermissions::AllPermissions() {
-  return PpapiPermissions(
-      PERMISSION_DEV |
-      PERMISSION_PRIVATE |
-      PERMISSION_BYPASS_USER_GESTURE);
+  return PpapiPermissions(PERMISSION_ALL_BITS);
 }
 
 bool PpapiPermissions::HasPermission(Permission perm) const {
   // Check that "perm" is a power of two to make sure the caller didn't set
   // more than one permission bit. We may want to change how permissions are
   // represented in the future so don't want callers making assumptions about
   // bits.
   uint32 perm_int = static_cast<uint32>(perm);
+  if (!perm_int)
+    return true;  // You always have "no permission".
   DCHECK((perm_int & (perm_int - 1)) == 0);
   return !!(permissions_ & perm_int);
 }
 
 }  // namespace ppapi