media: Add External Clear Key content browser test on Android

media/base/key_systems.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 "media/base/key_systems.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 392 matching lines @@
     if (properties->GetDistinctiveIdentifierSupport() ==
         EmeFeatureSupport::NOT_SUPPORTED) {
       DCHECK(properties->GetPersistentLicenseSessionSupport() !=
              EmeSessionTypeSupport::SUPPORTED_WITH_IDENTIFIER);
       DCHECK(properties->GetPersistentReleaseMessageSessionSupport() !=
              EmeSessionTypeSupport::SUPPORTED_WITH_IDENTIFIER);
     }
 
     // Distinctive identifiers and persistent state can only be reliably blocked
     // (and therefore be safely configurable) for Pepper-hosted key systems. For
-    // other platforms, (except for the AES decryptor) assume that the CDM can
-    // and will do anything.
+    // other platforms assume the CDM can and will do anything, except for the
+    // following two cases:
+    // 1) AES decryptor, and
+    // 2) External Clear Key key system on Android, only enabled for testing.
     bool can_block = properties->UseAesDecryptor();
 #if defined(ENABLE_PEPPER_CDMS)
     DCHECK_EQ(properties->UseAesDecryptor(),
               properties->GetPepperType().empty());
     if (!properties->GetPepperType().empty())
       can_block = true;
+#elif defined(OS_ANDROID)
+    if (IsExternalClearKey(properties->GetKeySystemName()))
+      can_block = true;
 #endif
     if (!can_block) {
       DCHECK(properties->GetDistinctiveIdentifierSupport() ==
              EmeFeatureSupport::ALWAYS_ENABLED);
       DCHECK(properties->GetPersistentStateSupport() ==
              EmeFeatureSupport::ALWAYS_ENABLED);
     }
 
     DCHECK_EQ(key_system_properties_map_.count(properties->GetKeySystemName()),
               0u)
@@ skipping 296 matching lines @@
                                uint32_t mask) {
   KeySystemsImpl::GetInstance()->AddCodecMask(media_type, codec, mask);
 }
 
 MEDIA_EXPORT void AddMimeTypeCodecMask(const std::string& mime_type,
                                        uint32_t mask) {
   KeySystemsImpl::GetInstance()->AddMimeTypeCodecMask(mime_type, mask);
 }
 
 }  // namespace media