Prepare MediaDrmBridge to work with MediaCodecPlayer

content/browser/media/android/media_drm_credential_manager.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/browser/media/android/media_drm_credential_manager.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 82 matching lines @@
     SecurityLevel security_level) {
   media_drm_bridge_ =
       media::MediaDrmBridge::CreateWithoutSessionSupport(kWidevineKeySystem);
   if (!media_drm_bridge_)
     return false;
 
   ResetCredentialsCB reset_credentials_cb =
       base::Bind(&MediaDrmCredentialManager::OnResetCredentialsCompleted,
                  base::Unretained(this), security_level);
 
-  if (!media_drm_bridge_->SetSecurityLevel(security_level)) {
+  media::MediaDrmBridge* media_drm_bridge =
+      static_cast<media::MediaDrmBridge*>(media_drm_bridge_.get());
+
+  if (!media_drm_bridge->SetSecurityLevel(security_level)) {
     // No need to reset credentials for unsupported |security_level|.
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(reset_credentials_cb, true));
     return true;
   }
 
-  media_drm_bridge_->ResetDeviceCredentials(reset_credentials_cb);
+  media_drm_bridge->ResetDeviceCredentials(reset_credentials_cb);
   return true;
 }
 
 // static
 bool MediaDrmCredentialManager::RegisterMediaDrmCredentialManager(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content