media: Add DefaultMediaPermission.

media/blink/webencryptedmediaclient_impl.cc

 // Copyright 2014 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 "webencryptedmediaclient_impl.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 170 matching lines @@
         base::Histogram::kUmaTargetedHistogramFlag)->Add(status);
   }
 
   const std::string uma_name_;
   bool is_request_reported_;
   bool is_support_reported_;
 };
 
 WebEncryptedMediaClientImpl::WebEncryptedMediaClientImpl(
     scoped_ptr<CdmFactory> cdm_factory,
-    MediaPermission* /* media_permission */)
+    MediaPermission* media_permission)
     : cdm_factory_(cdm_factory.Pass()) {
   // TODO(sandersd): Use |media_permission| to check for media permissions in
   // this class.
+  DCHECK(media_permission);
 }
 
 WebEncryptedMediaClientImpl::~WebEncryptedMediaClientImpl() {
 }
 
 void WebEncryptedMediaClientImpl::requestMediaKeySystemAccess(
     blink::WebEncryptedMediaRequest request) {
   // TODO(jrummell): This should be asynchronous.
 
   // Continued from requestMediaKeySystemAccess(), step 7, from
@@ skipping 63 matching lines @@
     return reporter;
 
   // Reporter not found, so create one.
   auto result =
       reporters_.add(uma_name, make_scoped_ptr(new Reporter(uma_name)));
   DCHECK(result.second);
   return result.first->second;
 }
 
 }  // namespace media