diff --git a/chrome/common/apps/platform_apps/chrome_apps_messages.h b/chrome/common/apps/platform_apps/chrome_apps_messages.h
index 3169f24c903fb5..f8138b4fc56127 100644
--- a/chrome/common/apps/platform_apps/chrome_apps_messages.h
+++ b/chrome/common/apps/platform_apps/chrome_apps_messages.h
@@ -8,8 +8,6 @@
 #include "chrome/common/apps/platform_apps/media_galleries_permission_data.h"
 #include "ipc/ipc_message_macros.h"
 
-#define IPC_MESSAGE_START ChromeAppsMsgStart
-
 IPC_STRUCT_TRAITS_BEGIN(chrome_apps::MediaGalleriesPermissionData)
   IPC_STRUCT_TRAITS_MEMBER(permission())
 IPC_STRUCT_TRAITS_END()
diff --git a/content/common/resource_messages.h b/content/common/resource_messages.h
index c31444de9a6620..0d31d88e8d4321 100644
--- a/content/common/resource_messages.h
+++ b/content/common/resource_messages.h
@@ -29,10 +29,6 @@
 
 #endif  // INTERNAL_CONTENT_COMMON_RESOURCE_MESSAGES_H_
 
-#define IPC_MESSAGE_START ResourceMsgStart
-#undef IPC_MESSAGE_EXPORT
-#define IPC_MESSAGE_EXPORT CONTENT_EXPORT
-
 IPC_ENUM_TRAITS_MAX_VALUE(blink::WebMixedContentContextType,
                           blink::WebMixedContentContextType::kLast)
 
diff --git a/ipc/ipc_message_start.h b/ipc/ipc_message_start.h
index 83460bdde7229e..2e7c90011da06e 100644
--- a/ipc/ipc_message_start.h
+++ b/ipc/ipc_message_start.h
@@ -24,7 +24,6 @@ enum IPCMessageStart {
   GpuChannelMsgStart,
   MediaMsgStart,
   PpapiMsgStart,
-  ResourceMsgStart,
   ChromeMsgStart,
   DragMsgStart,
   PrintMsgStart,
@@ -36,9 +35,7 @@ enum IPCMessageStart {
   ChromotingMsgStart,
   BrowserPluginMsgStart,
   AndroidWebViewMsgStart,
-  MediaPlayerMsgStart,
   PeerConnectionTrackerMsgStart,
-  WebRtcLoggingMsgStart,
   NaClHostMsgStart,
   EncryptedMediaMsgStart,
   CastMsgStart,
@@ -48,7 +45,6 @@ enum IPCMessageStart {
   WebTestMsgStart,
   NetworkHintsMsgStart,
   CastMediaMsgStart,
-  SyncCompositorMsgStart,
   ExtensionsGuestViewMsgStart,
   GuestViewMsgStart,
   // Note: CastCryptoMsgStart and CastChannelMsgStart reserved for Chromecast
@@ -60,7 +56,6 @@ enum IPCMessageStart {
   SurfaceViewManagerMsgStart,
   ExtensionWorkerMsgStart,
   SubresourceFilterMsgStart,
-  ChromeAppsMsgStart,
   UnfreezableFrameMsgStart,
   LastIPCMsgStart  // Must come last.
 };
diff --git a/tools/ipc_fuzzer/message_tools/message_list.cc b/tools/ipc_fuzzer/message_tools/message_list.cc
index f94bd9bcd67eda..cdf378536f9253 100644
--- a/tools/ipc_fuzzer/message_tools/message_list.cc
+++ b/tools/ipc_fuzzer/message_tools/message_list.cc
@@ -54,9 +54,7 @@ static bool check_msgtable() {
   exemptions.push_back(CastMediaMsgStart);    // Reserved for chromecast.
   exemptions.push_back(IPCTestMsgStart);
   exemptions.push_back(WorkerMsgStart);    // Now only used by tests.
-  exemptions.push_back(ResourceMsgStart);  // Cleanup underway.
   exemptions.push_back(ChromeUtilityPrintingMsgStart);  // BUILDFLAGS, sigh.
-  exemptions.push_back(WebRtcLoggingMsgStart);
 
 #if !BUILDFLAG(ENABLE_NACL)
   exemptions.push_back(NaClMsgStart);
@@ -64,11 +62,9 @@ static bool check_msgtable() {
 
 
 #if !defined(OS_ANDROID)
-  exemptions.push_back(MediaPlayerMsgStart);
   exemptions.push_back(EncryptedMediaMsgStart);
   exemptions.push_back(GinJavaBridgeMsgStart);
   exemptions.push_back(AndroidWebViewMsgStart);
-  exemptions.push_back(SyncCompositorMsgStart);
   exemptions.push_back(ExtensionWorkerMsgStart);
   exemptions.push_back(SurfaceViewManagerMsgStart);
 #endif  // !defined(OS_ANDROID)