Replace WIDEVINE_CDM_AVAILABLE with a gyp define 'enable_widevine_cdm'.

chrome/renderer/pepper/pepper_uma_host.cc

 // Copyright 2014 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 "chrome/renderer/pepper/pepper_uma_host.h"
 
 #include "base/metrics/histogram.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 17 matching lines @@
 const char* const kPredefinedAllowedUMAOrigins[] = {
     "6EAED1924DB611B6EEF2A664BD077BE7EAD33B8F",  // see http://crbug.com/317833
     "4EB74897CB187C7633357C2FE832E0AD6A44883A"   // see http://crbug.com/317833
 };
 
 const char* const kWhitelistedHistogramPrefixes[] = {
     "22F67DA2061FFC4DC9A4974036348D9C38C22919"  // see http://crbug.com/390221
 };
 
 const char* const kWhitelistedPluginBaseNames[] = {
-#if defined(WIDEVINE_CDM_AVAILABLE) && defined(ENABLE_PEPPER_CDMS)
+#if defined(ENABLE_WIDEVINE_CDM) && defined(ENABLE_PEPPER_CDMS)
     kWidevineCdmAdapterFileName,  // see http://crbug.com/368743
                                   // and http://crbug.com/410630
 #endif
     "libpdf.so"                   // see http://crbug.com/405305
 };
 
 std::string HashPrefix(const std::string& histogram) {
   const std::string id_hash =
       base::SHA1HashString(histogram.substr(0, histogram.find('.')));
   DCHECK_EQ(id_hash.length(), base::kSHA1Length);
@@ skipping 151 matching lines @@
     ppapi::host::HostMessageContext* context) {
   if (!IsPluginWhitelisted())
     return PP_ERROR_NOACCESS;
   bool enabled = false;
   content::RenderThread::Get()->Send(
       new ChromeViewHostMsg_IsCrashReportingEnabled(&enabled));
   if (enabled)
     return PP_OK;
   return PP_ERROR_FAILED;
 }