linux (and some posix): multiprocess plugins compiling.

chrome/browser/renderer_host/browser_render_process_host.cc

 // Copyright (c) 2006-2008 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
 
 #include "build/build_config.h"
@@ skipping 308 matching lines @@
     in_process_renderer_.reset(new RendererMainThread(channel_id));
 
     base::Thread::Options options;
     options.message_loop_type = MessageLoop::TYPE_IO;
     in_process_renderer_->StartWithOptions(options);
   } else {
     base::ProcessHandle process = 0;
 #if defined(OS_WIN)
     process = sandbox::StartProcess(&cmd_line);
 #else
+    // NOTE: This code is duplicated with plugin_process_host.cc, but
+    // there's not a good place to de-duplicate it.
     base::file_handle_mapping_vector fds_to_map;
     int src_fd = -1, dest_fd = -1;
     channel_->GetClientFileDescriptorMapping(&src_fd, &dest_fd);
     if (src_fd > -1)
       fds_to_map.push_back(std::pair<int, int>(src_fd, dest_fd));
     base::LaunchApp(cmd_line.argv(), fds_to_map, false, &process);
 #endif
     if (!process) {
       channel_.reset();
       return false;
     }
     process_.set_handle(process);
     SetProcessID(process_.pid());
   }
 
   resource_message_filter->Init(pid());
   WebCacheManager::GetInstance()->Add(pid());
   RendererSecurityPolicy::GetInstance()->Add(pid());
 
-  // Now that the process is created, set it's backgrounding accordingly.
+  // Now that the process is created, set its backgrounding accordingly.
   SetBackgrounded(backgrounded_);
 
   InitVisitedLinks();
   InitUserScripts();
   InitExtensions();
 
   if (max_page_id_ != -1)
     channel_->Send(new ViewMsg_SetNextPageID(max_page_id_ + 1));
 
   return true;
@@ skipping 408 matching lines @@
         SendUserScriptsUpdate(shared_memory);
       }
       break;
     }
     default: {
       NOTREACHED();
       break;
     }
   }
 }