Encrypted Media: DecryptingXxx::SetDecryptor() accepts NULL decryptor.

media/filters/decrypting_video_decoder_unittest.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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/message_loop.h"
@@ skipping 236 matching lines @@
   scoped_refptr<VideoFrame> end_of_stream_video_frame_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DecryptingVideoDecoderTest);
 };
 
 TEST_F(DecryptingVideoDecoderTest, Initialize_Normal) {
   Initialize();
 }
 
+TEST_F(DecryptingVideoDecoderTest, Initialize_NullDecryptor) {
+  EXPECT_CALL(*this, RequestDecryptorNotification(_))
+      .WillRepeatedly(RunCallbackIfNotNull(static_cast<Decryptor*>(NULL)));
+  InitializeAndExpectStatus(TestVideoConfig::NormalEncrypted(),
+                            DECODER_ERROR_NOT_SUPPORTED);
+}
+
 TEST_F(DecryptingVideoDecoderTest, Initialize_Failure) {
   EXPECT_CALL(*decryptor_, InitializeVideoDecoder(_, _))
       .WillRepeatedly(RunCallback<1>(false));
   EXPECT_CALL(*decryptor_, RegisterNewKeyCB(Decryptor::kVideo, _))
       .WillRepeatedly(SaveArg<1>(&key_added_cb_));
 
   InitializeAndExpectStatus(TestVideoConfig::NormalEncrypted(),
                             DECODER_ERROR_NOT_SUPPORTED);
 }
 
@@ skipping 305 matching lines @@
 
 // Test stopping after the decoder has been stopped.
 TEST_F(DecryptingVideoDecoderTest, Stop_AfterStop) {
   Initialize();
   EnterNormalDecodingState();
   Stop();
   Stop();
 }
 
 }  // namespace media