First cut for a FreeBSD port - much still not working

chrome/common/transport_dib.h

 // Copyright (c) 2006-2009 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.
 
 #ifndef CHROME_COMMON_TRANSPORT_DIB_H_
 #define CHROME_COMMON_TRANSPORT_DIB_H_
 
 #include "base/basictypes.h"
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
 #include "base/shared_memory.h"
 #endif
 
 #if defined(OS_WIN)
 #include <windows.h>
-#elif defined(OS_LINUX)
+#elif defined(USE_X11)
 #include "chrome/common/x11_util.h"
 #endif
 
 namespace gfx {
 class Size;
 }
 namespace skia {
 class PlatformCanvas;
 }
 
@@ skipping 47 matching lines @@
   // Transport DIB.
   static Handle DefaultHandleValue() { return NULL; }
 #elif defined(OS_MACOSX)
   typedef base::SharedMemoryHandle Handle;
   // On Mac, the inode number of the backing file is used as an id.
   typedef base::SharedMemoryId Id;
 
   // Returns a default, invalid handle, that is meant to indicate a missing
   // Transport DIB.
   static Handle DefaultHandleValue() { return Handle(); }
-#elif defined(OS_LINUX)
+#elif defined(USE_X11)
   typedef int Handle;  // These two ints are SysV IPC shared memory keys
   typedef int Id;
 
   // Returns a default, invalid handle, that is meant to indicate a missing
   // Transport DIB.
   static Handle DefaultHandleValue() { return -1; }
 #endif
 
   // Create a new TransportDIB
   //   size: the minimum size, in bytes
@@ skipping 21 matching lines @@
   size_t size() const { return size_; }
 
   // Return the identifier which can be used to refer to this shared memory
   // on the wire.
   Id id() const;
 
   // Return a handle to the underlying shared memory. This can be sent over the
   // wire to give this transport DIB to another process.
   Handle handle() const;
 
-#if defined(OS_LINUX)
+#if defined(USE_X11)
   // Map the shared memory into the X server and return an id for the shared
   // segment.
   XID MapToX(Display* connection);
 #endif
 
  private:
   TransportDIB();
 #if defined(OS_WIN) || defined(OS_MACOSX)
   explicit TransportDIB(base::SharedMemoryHandle dib);
   base::SharedMemory shared_memory_;
   uint32 sequence_num_;
-#elif defined(OS_LINUX)
+#elif defined(USE_X11)
   int key_;  // SysV shared memory id
   void* address_;  // mapped address
   XID x_shm_;  // X id for the shared segment
   Display* display_;  // connection to the X server
 #endif
   size_t size_;  // length, in bytes
 
   DISALLOW_COPY_AND_ASSIGN(TransportDIB);
 };
 
 class MessageLoop;
 
 #endif  // CHROME_COMMON_TRANSPORT_DIB_H_