Move ENABLE_PEPPER_CDMS to a buildflag header.

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 c1043375281defa789561245fa3d9432502ae97b..4c14be387bcb0df57eeb82c1a1da989c825a1b33 100644
--- a/chrome/browser/plugins/plugin_info_message_filter.cc
+++ b/chrome/browser/plugins/plugin_info_message_filter.cc
@@ -41,6 +41,7 @@
 #include "content/public/browser/plugin_service_filter.h"
 #include "content/public/common/content_constants.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
+#include "ppapi/features/features.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
@@ -63,7 +64,7 @@ using content::WebPluginInfo;
 
 namespace {
 
-#if defined(ENABLE_PEPPER_CDMS)
+#if BUILDFLAG(ENABLE_PEPPER_CDMS)
 
 enum PluginAvailabilityStatusForUMA {
   PLUGIN_NOT_REGISTERED,
@@ -84,7 +85,7 @@ static void SendPluginAvailabilityUMA(const std::string& mime_type,
 #endif  // defined(WIDEVINE_CDM_AVAILABLE)
 }
 
-#endif  // defined(ENABLE_PEPPER_CDMS)
+#endif  // BUILDFLAG(ENABLE_PEPPER_CDMS)
 
 // Report usage metrics for Silverlight and Flash plugin instantiations to the
 // RAPPOR service.
@@ -187,7 +188,7 @@ bool PluginInfoMessageFilter::OnMessageReceived(const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(PluginInfoMessageFilter, message)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(ChromeViewHostMsg_GetPluginInfo,
                                     OnGetPluginInfo)
-#if defined(ENABLE_PEPPER_CDMS)
+#if BUILDFLAG(ENABLE_PEPPER_CDMS)
     IPC_MESSAGE_HANDLER(
         ChromeViewHostMsg_IsInternalPluginAvailableForMimeType,
         OnIsInternalPluginAvailableForMimeType)
@@ -261,7 +262,7 @@ void PluginInfoMessageFilter::PluginsLoaded(
   }
 }
 
-#if defined(ENABLE_PEPPER_CDMS)
+#if BUILDFLAG(ENABLE_PEPPER_CDMS)
 
 void PluginInfoMessageFilter::OnIsInternalPluginAvailableForMimeType(
     const std::string& mime_type,
@@ -297,7 +298,7 @@ void PluginInfoMessageFilter::OnIsInternalPluginAvailableForMimeType(
       mime_type, is_plugin_disabled ? PLUGIN_DISABLED : PLUGIN_NOT_REGISTERED);
 }
 
-#endif  // defined(ENABLE_PEPPER_CDMS)
+#endif  // BUILDFLAG(ENABLE_PEPPER_CDMS)
 
 void PluginInfoMessageFilter::Context::DecidePluginStatus(
     const GetPluginInfo_Params& params,