Introduce the ENABLE_BROWSER_CDMS macro.

content/renderer/media/crypto/content_decryption_module_factory.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/content_decryption_module_factory.h"
 
 #include "base/logging.h"
 #include "content/renderer/media/crypto/key_systems.h"
 #include "media/cdm/aes_decryptor.h"
 #include "url/gurl.h"
 
 #if defined(ENABLE_PEPPER_CDMS)
 #include "content/renderer/media/crypto/ppapi_decryptor.h"
-#elif defined(OS_ANDROID)
+#elif defined(ENABLE_BROWSER_CDMS)
 #include "content/renderer/media/crypto/proxy_media_keys.h"
 #include "content/renderer/media/crypto/renderer_cdm_manager.h"
 #endif  // defined(ENABLE_PEPPER_CDMS)
 
 namespace content {
 
 scoped_ptr<media::MediaKeys> ContentDecryptionModuleFactory::Create(
     const std::string& key_system,
     const GURL& security_origin,
 #if defined(ENABLE_PEPPER_CDMS)
     const CreatePepperCdmCB& create_pepper_cdm_cb,
-#elif defined(OS_ANDROID)
+#elif defined(ENABLE_BROWSER_CDMS)
     RendererCdmManager* manager,
     int* cdm_id,
 #endif  // defined(ENABLE_PEPPER_CDMS)
     const media::SessionMessageCB& session_message_cb,
     const media::SessionReadyCB& session_ready_cb,
     const media::SessionClosedCB& session_closed_cb,
     const media::SessionErrorCB& session_error_cb) {
   // TODO(jrummell): Pass |security_origin| to all constructors.
   // TODO(jrummell): Enable the following line once blink code updated to
   // check the security origin before calling.
   // DCHECK(security_origin.is_valid());
 
-#if defined(OS_ANDROID)
+#if defined(ENABLE_BROWSER_CDMS)
   *cdm_id = RendererCdmManager::kInvalidCdmId;
 #endif
 
   if (CanUseAesDecryptor(key_system)) {
     return scoped_ptr<media::MediaKeys>(
         new media::AesDecryptor(session_message_cb));
   }
 #if defined(ENABLE_PEPPER_CDMS)
   return scoped_ptr<media::MediaKeys>(
       PpapiDecryptor::Create(key_system,
                              security_origin,
                              create_pepper_cdm_cb,
                              session_message_cb,
                              session_ready_cb,
                              session_closed_cb,
                              session_error_cb));
-#elif defined(OS_ANDROID)
+#elif defined(ENABLE_BROWSER_CDMS)
   scoped_ptr<ProxyMediaKeys> proxy_media_keys =
       ProxyMediaKeys::Create(key_system,
                              security_origin,
                              manager,
                              session_message_cb,
                              session_ready_cb,
                              session_closed_cb,
                              session_error_cb);
   if (proxy_media_keys)
     *cdm_id = proxy_media_keys->GetCdmId();
   return proxy_media_keys.PassAs<media::MediaKeys>();
 #else
   return scoped_ptr<media::MediaKeys>();
 #endif  // defined(ENABLE_PEPPER_CDMS)
 }
 
 }  // namespace content