Fix build of IPC fuzzing utils.

content/common/accessibility_messages.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for accessibility.
 // Multiply-included message file, hence no include guard.
 
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
 #include "content/common/view_message_enums.h"
 #include "content/public/common/common_param_traits.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/ipc_param_traits.h"
 #include "ipc/param_traits_macros.h"
 #include "third_party/WebKit/public/web/WebAXEnums.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/accessibility/ax_tree_update.h"
 
+// Singly-included section for custom types.
+#ifndef CONTENT_COMMON_ACCESSIBILITY_MESSAGES_H_
+#define CONTENT_COMMON_ACCESSIBILITY_MESSAGES_H_
+
+typedef std::map<int32, int> FrameIDMap;
+
+#endif  // CONTENT_COMMON_ACCESSIBILITY_MESSAGES_H_
+
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START AccessibilityMsgStart
 
 IPC_ENUM_TRAITS_MAX_VALUE(ui::AXEvent, ui::AX_EVENT_LAST)
 IPC_ENUM_TRAITS_MAX_VALUE(ui::AXRole, ui::AX_ROLE_LAST)
 
 IPC_ENUM_TRAITS_MAX_VALUE(ui::AXBoolAttribute, ui::AX_BOOL_ATTRIBUTE_LAST)
 IPC_ENUM_TRAITS_MAX_VALUE(ui::AXFloatAttribute, ui::AX_FLOAT_ATTRIBUTE_LAST)
@@ skipping 14 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(intlist_attributes)
   IPC_STRUCT_TRAITS_MEMBER(html_attributes)
   IPC_STRUCT_TRAITS_MEMBER(child_ids)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(ui::AXTreeUpdate)
   IPC_STRUCT_TRAITS_MEMBER(node_id_to_clear)
   IPC_STRUCT_TRAITS_MEMBER(nodes)
 IPC_STRUCT_TRAITS_END()
 
-typedef std::map<int32, int> FrameIDMap;
-
 IPC_STRUCT_BEGIN(AccessibilityHostMsg_EventParams)
   // The tree update.
   IPC_STRUCT_MEMBER(ui::AXTreeUpdate, update)
 
   // Mapping from node id to routing id of its child frame - either the
   // routing id of a RenderFrame or a RenderFrameProxy for an out-of-process
   // iframe.
   IPC_STRUCT_MEMBER(FrameIDMap, node_to_frame_routing_id_map)
 
   // Type of event.
@@ skipping 63 matching lines @@
 // Sent to notify the browser about renderer accessibility events.
 // The browser responds with a AccessibilityMsg_Events_ACK.
 IPC_MESSAGE_ROUTED1(
     AccessibilityHostMsg_Events,
     std::vector<AccessibilityHostMsg_EventParams>)
 
 // Sent to update the browser of the location of accessibility objects.
 IPC_MESSAGE_ROUTED1(
     AccessibilityHostMsg_LocationChanges,
     std::vector<AccessibilityHostMsg_LocationChangeParams>)