media: Add DefaultMediaPermission.

media/blink/encrypted_media_player_support.cc

Index: media/blink/encrypted_media_player_support.cc
diff --git a/media/blink/encrypted_media_player_support.cc b/media/blink/encrypted_media_player_support.cc
index 01422e5a2ac8e9793c27276cbe7ad3391fa2e36e..920bfc94d224f40ccf7444e85d6661de15728f3b 100644
--- a/media/blink/encrypted_media_player_support.cc
+++ b/media/blink/encrypted_media_player_support.cc
@@ -115,9 +115,11 @@ static std::string GuessInitDataType(const unsigned char* init_data,
 EncryptedMediaPlayerSupport::EncryptedMediaPlayerSupport(
     scoped_ptr<CdmFactory> cdm_factory,
     blink::WebMediaPlayerClient* client,
+    MediaPermission* media_permission,
     const SetCdmContextCB& set_cdm_context_cb)
     : cdm_factory_(cdm_factory.Pass()),
       client_(client),
+      media_permission_(media_permission),
       set_cdm_context_cb_(set_cdm_context_cb) {
 }
 
@@ -156,6 +158,7 @@ EncryptedMediaPlayerSupport::GenerateKeyRequestInternal(
   if (current_key_system_.empty()) {
     if (!proxy_decryptor_) {
       proxy_decryptor_.reset(new ProxyDecryptor(
+          media_permission_,
           BIND_TO_RENDER_LOOP(&EncryptedMediaPlayerSupport::OnKeyAdded),
           BIND_TO_RENDER_LOOP(&EncryptedMediaPlayerSupport::OnKeyError),
           BIND_TO_RENDER_LOOP(&EncryptedMediaPlayerSupport::OnKeyMessage)));