Add a function to convert key system into UUID

webkit/renderer/media/crypto/key_systems_info.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 "webkit/renderer/media/crypto/key_systems_info.h"
 
-#include "base/basictypes.h"
-
 #include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR.
 
 #if defined(WIDEVINE_CDM_AVAILABLE) && \
     defined(OS_LINUX) && !defined(OS_CHROMEOS)
 #include <gnu/libc-version.h>
 #include "base/logging.h"
 #include "base/version.h"
 #endif
 
 namespace webkit_media {
@@ skipping 75 matching lines @@
   { kExternalClearKeyKeySystem, "application/x-ppapi-clearkey-cdm"},
 #if defined(WIDEVINE_CDM_AVAILABLE)
   { kWidevineKeySystem, kWidevineCdmPluginMimeType}
 #endif  // WIDEVINE_CDM_AVAILABLE
 };
 
 const int kNumKeySystemToPepperTypeMapping =
     arraysize(kKeySystemToPepperTypeMapping);
 #endif  // defined(ENABLE_PEPPER_CDMS)
 
+#if defined(OS_ANDROID)
+// TODO(qinmin): add UUIDs for other key systems.
+const KeySystemUUIDPair kKeySystemToUUIDMapping[] = {
+#if defined(WIDEVINE_CDM_AVAILABLE)
+  { kWidevineKeySystem, { 0xED, 0xEF, 0x8B, 0xA9, 0x79, 0xD6, 0x4A, 0xCE,
+                          0xA3, 0xC8, 0x27, 0xDC, 0xD5, 0x1D, 0x21, 0xED }
+  }
+#endif  // defined(WIDEVINE_CDM_AVAILABLE)
+};
+
+// arraySize() does not work if the array is empty, so use ARRAYSIZE_UNSAFE().
+const int kNumKeySystemToUUIDMapping =
+    ARRAYSIZE_UNSAFE(kKeySystemToUUIDMapping);
+#endif  // defined(OS_ANDROID)
+
 bool IsSystemCompatible(const std::string& key_system) {
 #if defined(WIDEVINE_CDM_AVAILABLE) && \
     defined(OS_LINUX) && !defined(OS_CHROMEOS)
   if (key_system == kWidevineKeySystem ||
       key_system == kWidevineBaseKeySystem) {
     Version glibc_version(gnu_get_libc_version());
     DCHECK(glibc_version.IsValid());
     return !glibc_version.IsOlderThan(WIDEVINE_CDM_MIN_GLIBC_VERSION);
   }
 #endif
   return true;
 }
 
 std::string KeySystemNameForUMAGeneric(const std::string& key_system) {
   if (key_system == kClearKeyKeySystem)
     return "ClearKey";
 #if defined(WIDEVINE_CDM_AVAILABLE)
   if (key_system == kWidevineKeySystem)
     return "Widevine";
 #endif  // WIDEVINE_CDM_AVAILABLE
   return "Unknown";
 }
 
 bool CanUseBuiltInAesDecryptor(const std::string& key_system) {
   return  key_system == kClearKeyKeySystem;
 }
 
 } // namespace webkit_media