Snapshot of all changes to get jumbo in blink and content.

content/common/media/aec_dump_messages.h

Index: content/common/media/aec_dump_messages.h
diff --git a/content/common/media/aec_dump_messages.h b/content/common/media/aec_dump_messages.h
index 33e727d2dab8b1ce54273fdf56353d0667779914..58270eb329357128f4daa9c4de326b0f2c0b7c57 100644
--- a/content/common/media/aec_dump_messages.h
+++ b/content/common/media/aec_dump_messages.h
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#ifndef CONTENT_COMMON_MEDIA_AEC_DUMP_MESSAGES_H_
+#define CONTENT_COMMON_MEDIA_AEC_DUMP_MESSAGES_H_
+
 // IPC messages for the AEC dump.
 // Multiply-included message file, hence no include guard.
 
@@ -39,3 +42,5 @@ IPC_MESSAGE_CONTROL1(AecDumpMsg_UnregisterAecDumpConsumer,
 IPC_MESSAGE_CONTROL2(AudioProcessingMsg_EnableAec3,
                      int /* id */,
                      bool /* enable */)
+
+#endif  // CONTENT_COMMON_MEDIA_AEC_DUMP_MESSAGES_H_