diff -upr chromium-42.0.2311.90.orig/third_party/widevine/cdm/widevine_cdm_version.h chromium-42.0.2311.90/third_party/widevine/cdm/widevine_cdm_version.h
--- chromium-42.0.2311.90.orig/third_party/widevine/cdm/widevine_cdm_version.h	2015-04-15 01:18:59.000000000 +0300
+++ chromium-42.0.2311.90/third_party/widevine/cdm/widevine_cdm_version.h	2015-04-15 09:09:49.157260050 +0300
@@ -14,4 +14,8 @@
 //  - WIDEVINE_CDM_VERSION_STRING (with the version of the CDM that's available
 //    as a string, e.g., "1.0.123.456").
 
+#include "third_party/widevine/cdm/widevine_cdm_common.h"
+#define WIDEVINE_CDM_AVAILABLE
+#define WIDEVINE_CDM_VERSION_STRING "@WIDEVINE_VERSION@"
+
 #endif  // WIDEVINE_CDM_VERSION_H_