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

content/common/database_messages.h

Index: content/common/database_messages.h
diff --git a/content/common/database_messages.h b/content/common/database_messages.h
index fa0ea266d57148182f241e3b108cab04216cc764..550ee01723cc7af0ffbbe7258e7f9c4fc28855e9 100644
--- a/content/common/database_messages.h
+++ b/content/common/database_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_DATABASE_MESSAGES_H_
+#define CONTENT_COMMON_DATABASE_MESSAGES_H_
+
 // Multiply-included message file, no include guard.
 
 #include <stdint.h>
@@ -92,3 +95,5 @@ IPC_MESSAGE_CONTROL3(DatabaseHostMsg_HandleSqliteError,
                      url::Origin /* origin */,
                      base::string16 /* database name */,
                      int /* error */)
+
+#endif  // CONTENT_COMMON_DATABASE_MESSAGES_H_