Replace WIDEVINE_CDM_AVAILABLE with a gyp define 'enable_widevine_cdm'.

chrome/browser/plugins/plugin_info_message_filter.cc

Index: chrome/browser/plugins/plugin_info_message_filter.cc
diff --git a/chrome/browser/plugins/plugin_info_message_filter.cc b/chrome/browser/plugins/plugin_info_message_filter.cc
index abd690b4ed8f9ad1bbf6d8bd23486fe761c4f76c..3c41a3c23bc8113fbabd1f0d6c01b7b768462f35 100644
--- a/chrome/browser/plugins/plugin_info_message_filter.cc
+++ b/chrome/browser/plugins/plugin_info_message_filter.cc
@@ -66,13 +66,13 @@ bool ShouldUseJavaScriptSettingForPlugin(const WebPluginInfo& plugin) {
     return true;
 #endif
 
-#if defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS)
+#if defined(ENABLE_WIDEVINE_CDM) && defined(ENABLE_PEPPER_CDMS)
   // Treat CDM invocations like JavaScript.
   if (plugin.name == base::ASCIIToUTF16(kWidevineCdmDisplayName)) {
     DCHECK(plugin.type == WebPluginInfo::PLUGIN_TYPE_PEPPER_OUT_OF_PROCESS);
     return true;
   }
-#endif  // defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS)
+#endif  // defined(ENABLE_WIDEVINE_CDM) && defined(ENABLE_PEPPER_CDMS)
 
   return false;
 }
@@ -88,14 +88,14 @@ enum PluginAvailabilityStatusForUMA {
 
 static void SendPluginAvailabilityUMA(const std::string& mime_type,
                                       PluginAvailabilityStatusForUMA status) {
-#if defined(WIDEVINE_CDM_AVAILABLE)
+#if defined(ENABLE_WIDEVINE_CDM)
   // Only report results for Widevine CDM.
   if (mime_type != kWidevineCdmPluginMimeType)
     return;
 
   UMA_HISTOGRAM_ENUMERATION("Plugin.AvailabilityStatus.WidevineCdm",
                             status, PLUGIN_AVAILABILITY_STATUS_MAX);
-#endif  // defined(WIDEVINE_CDM_AVAILABLE)
+#endif  // defined(ENABLE_WIDEVINE_CDM)
 }
 
 #endif  // defined(ENABLE_PEPPER_CDMS)