Add decrypt-only external clear key browser tests.

media/cdm/ppapi/clear_key_cdm.h

 // 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.
 
 #ifndef MEDIA_CDM_PPAPI_CLEAR_KEY_CDM_H_
 #define MEDIA_CDM_PPAPI_CLEAR_KEY_CDM_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
 #endif
 
 namespace media {
 class CdmVideoDecoder;
 class DecoderBuffer;
 class FFmpegCdmAudioDecoder;
 
 // Clear key implementation of the cdm::ContentDecryptionModule interface.
 class ClearKeyCdm : public ClearKeyCdmInterface {
  public:
-  explicit ClearKeyCdm(Host* host);
+  explicit ClearKeyCdm(Host* host, bool is_decrypt_only);
   virtual ~ClearKeyCdm();
 
   // ContentDecryptionModule implementation.
   virtual cdm::Status GenerateKeyRequest(
       const char* type, uint32_t type_size,
       const uint8_t* init_data, uint32_t init_data_size) OVERRIDE;
   virtual cdm::Status AddKey(const char* session_id,
                              uint32_t session_id_size,
                              const uint8_t* key,
                              uint32_t key_size,
@@ skipping 99 matching lines @@
 
   Client client_;
   AesDecryptor decryptor_;
 
   // Protects the |client_| from being accessed by the |decryptor_|
   // simultaneously.
   base::Lock client_lock_;
 
   ClearKeyCdmHost* host_;
 
+  const bool is_decrypt_only_;
+
   std::string heartbeat_session_id_;
   std::string next_heartbeat_message_;
 
   // Timer delay in milliseconds for the next host_->SetTimer() call.
   int64 timer_delay_ms_;
 
   // Indicates whether a timer has been set to prevent multiple timers from
   // running.
   bool timer_set_;
 
@@ skipping 10 matching lines @@
 #endif  // CLEAR_KEY_CDM_USE_FFMPEG_DECODER
 
   scoped_ptr<CdmVideoDecoder> video_decoder_;
 
   DISALLOW_COPY_AND_ASSIGN(ClearKeyCdm);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CDM_PPAPI_CLEAR_KEY_CDM_H_