Move some global feature defines to buildflags

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index fe396fc3a773dcc724e47798e0e6e0e2acc4160d..fcdd6604a86f6d5dfe50cbaa557e402195e23142 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -11,6 +11,7 @@
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "chrome/common/features.h"
 #include "chrome/common/search/instant_types.h"
 #include "chrome/common/search/ntp_logging_events.h"
 #include "chrome/common/web_application_info.h"
@@ -443,7 +444,7 @@ IPC_SYNC_MESSAGE_CONTROL1_3(
     std::vector<base::string16> /* additional_param_values */)
 #endif
 
-#if defined(ENABLE_PLUGIN_INSTALLATION)
+#if BUILDFLAG(ENABLE_PLUGIN_INSTALLATION)
 // Notifies the browser that a missing plugin placeholder has been removed, so
 // the corresponding PluginPlaceholderHost can be deleted.
 IPC_MESSAGE_ROUTED1(ChromeViewHostMsg_RemovePluginPlaceholderHost,
@@ -469,7 +470,7 @@ IPC_MESSAGE_ROUTED0(ChromeViewMsg_FinishedDownloadingPlugin)
 // the plugin.
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_ErrorDownloadingPlugin,
                     std::string /* message */)
-#endif  // defined(ENABLE_PLUGIN_INSTALLATION)
+#endif  // BUILDFLAG(ENABLE_PLUGIN_INSTALLATION)
 
 // Notifies a missing plugin placeholder that we have finished component-
 // updating the plug-in.