Replace WIDEVINE_CDM_AVAILABLE with a gyp define 'enable_widevine_cdm'.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index a3a7bd3f712cce62d2b18adb82a925865db86ef0..cf215874bb904eb88ff9dc06d16a7ffc966de212 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -245,13 +245,13 @@ 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 == 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;
 }