Continue with the FreeBSD port - this version builds and links, though...

chrome/common/render_messages_internal.h

 // Copyright (c) 2009 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <string>
 #include <vector>
@@ skipping 1040 matching lines @@
   // create a plugin.  The browser will create the plugin process if
   // necessary, and will return a handle to the channel on success.
   // On error an empty string is returned.
   IPC_SYNC_MESSAGE_CONTROL3_2(ViewHostMsg_OpenChannelToPlugin,
                               GURL /* url */,
                               std::string /* mime_type */,
                               std::wstring /* locale */,
                               IPC::ChannelHandle /* handle to channel */,
                               WebPluginInfo /* info */)
 
-#if defined(OS_LINUX)
+#if defined(USE_X11)
   // A renderer sends this when it needs a browser-side widget for
   // hosting a windowed plugin. id is the XID of the plugin window, for which
   // the container is created.
   IPC_SYNC_MESSAGE_ROUTED1_0(ViewHostMsg_CreatePluginContainer,
                              gfx::PluginWindowHandle /* id */)
 
   // Destroy a plugin container previously created using CreatePluginContainer.
   // id is the XID of the plugin window corresponding to the container that is
   // to be destroyed.
   IPC_SYNC_MESSAGE_ROUTED1_0(ViewHostMsg_DestroyPluginContainer,
@@ skipping 304 matching lines @@
                       int /* request_id */)
 
 #if defined(OS_WIN)
   // Duplicates a shared memory handle from the renderer to the browser. Then
   // the renderer can flush the handle.
   IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_DuplicateSection,
                              base::SharedMemoryHandle /* renderer handle */,
                              base::SharedMemoryHandle /* browser handle */)
 #endif
 
-#if defined(OS_LINUX)
+#if defined(USE_X11)
   // Asks the browser create a block of shared memory for the renderer to fill
   // in resulting NativeMetafile in printing.
   IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_AllocateShareMemory,
                              size_t /* buffer size */,
                              base::SharedMemoryHandle /* browser handle */)
 #endif
 
   // Provide the browser process with information about the WebCore resource
   // cache.
   IPC_MESSAGE_CONTROL1(ViewHostMsg_ResourceTypeStats,
@@ skipping 324 matching lines @@
   IPC_MESSAGE_CONTROL2(ViewHostMsg_DatabaseGetFileAttributes,
                        FilePath /* the name of the file */,
                        int32 /* a unique message ID */)
 
   // Asks the browser process to return the size of a DB file
   IPC_MESSAGE_CONTROL2(ViewHostMsg_DatabaseGetFileSize,
                        FilePath /* the name of the file */,
                        int32 /* a unique message ID */)
 
 IPC_END_MESSAGES(ViewHost)