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

content/common/devtools_messages.h

Index: content/common/devtools_messages.h
diff --git a/content/common/devtools_messages.h b/content/common/devtools_messages.h
index d8fef04fd9c6a020cb9b47d7be9f6c8cb8d4017a..b1f1e95d8bc96a39b075fb7f0fff4db214341d9f 100644
--- a/content/common/devtools_messages.h
+++ b/content/common/devtools_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_DEVTOOLS_MESSAGES_H_
+#define CONTENT_COMMON_DEVTOOLS_MESSAGES_H_
+
 // Developer tools consist of the following parts:
 //
 // DevToolsAgent lives in the renderer of an inspected page and provides access
@@ -135,3 +138,5 @@ IPC_MESSAGE_ROUTED1(DevToolsMsg_SetupDevToolsClient,
 // Transport from Inspector frontend to frontend host.
 IPC_MESSAGE_ROUTED1(DevToolsHostMsg_DispatchOnEmbedder,
                     std::string /* message */)
+
+#endif  // CONTENT_COMMON_DEVTOOLS_MESSAGES_H_