Encrypted Media: Implement IPC based SetCdm().

content/renderer/media/crypto/proxy_decryptor.cc

 // Copyright 2013 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 "content/renderer/media/crypto/proxy_decryptor.h"
 
 #include <cstring>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 57 matching lines @@
 
 ProxyDecryptor::~ProxyDecryptor() {
   // Destroy the decryptor explicitly before destroying the plugin.
   media_keys_.reset();
 }
 
 media::Decryptor* ProxyDecryptor::GetDecryptor() {
   return media_keys_ ? media_keys_->GetDecryptor() : NULL;
 }
 
+int ProxyDecryptor::GetCdmId() {
+  return media_keys_ ? media_keys_->GetCdmId()
+                     : media::MediaKeys::kInvalidCdmId;
+}
+
 bool ProxyDecryptor::InitializeCDM(const std::string& key_system,
                                    const GURL& frame_url) {
   DVLOG(1) << "InitializeCDM: key_system = " << key_system;
 
   DCHECK(!media_keys_);
   media_keys_ = CreateMediaKeys(key_system, frame_url);
   if (!media_keys_)
     return false;
 
   is_clear_key_ =
@@ skipping 174 matching lines @@
 
 const std::string& ProxyDecryptor::LookupWebSessionId(uint32 session_id) const {
   DCHECK_NE(session_id, kInvalidSessionId);
 
   // Session may not exist if error happens during GenerateKeyRequest().
   SessionIdMap::const_iterator it = sessions_.find(session_id);
   return (it != sessions_.end()) ? it->second : base::EmptyString();
 }
 
 }  // namespace content