First step of porting VisitedLinkMaster to POSIX:

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"
 
 #include <algorithm>
 #include <sstream>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/debug_util.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/shared_memory.h"
 #include "base/singleton.h"
 #include "base/string_util.h"
 #include "base/thread.h"
 #include "chrome/app/result_codes.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/cache_manager_host.h"
 #include "chrome/browser/extensions/user_script_master.h"
+#if defined(OS_WIN)
 #include "chrome/browser/history/history.h"
+#else
+// TODO(port): remove scaffolding, use history.h for both POSIX and WIN.
+#include "chrome/common/temp_scaffolding_stubs.h"
+#endif  // !defined(OS_WIN)
+
 #include "chrome/browser/plugin_service.h"
 #include "chrome/browser/renderer_host/render_widget_helper.h"
 #include "chrome/browser/renderer_host/renderer_security_policy.h"
 #include "chrome/browser/resource_message_filter.h"
+#if defined(OS_WIN)
 #include "chrome/browser/spellchecker.h"
+#else
+// TODO(port): remove scaffolding, use history.h for both POSIX and WIN.
+#include "chrome/common/temp_scaffolding_stubs.h"
+#endif  // !defined(OS_WIN)
 #include "chrome/browser/visitedlink_master.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/debug_flags.h"
 #include "chrome/common/l10n_util.h"
 #include "chrome/common/logging_chrome.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/pref_service.h"
 #include "chrome/common/process_watcher.h"
 #include "chrome/renderer/render_process.h"
@@ skipping 417 matching lines @@
   DCHECK(backgrounded_ == (visible_widgets_ == 0));
   visible_widgets_--;
   DCHECK(visible_widgets_ >= 0);
   if (visible_widgets_ == 0) {
     DCHECK(!backgrounded_);
     SetBackgrounded(true);
   }
 }
 
 void BrowserRenderProcessHost::AddWord(const std::wstring& word) {
+#if defined(OS_MACOSX)
+  // TODO(port): reimplement when we get the spell checker up and running on
+  // OS X.
+  NOTIMPLEMENTED();
+#else
   base::Thread* io_thread = g_browser_process->io_thread();
   if (profile()->GetSpellChecker()) {
     io_thread->message_loop()->PostTask(FROM_HERE, NewRunnableMethod(
         profile()->GetSpellChecker(), &SpellChecker::AddWord, word));
   }
+#endif // !defined(OS_MACOSX)
 }
 
 base::ProcessHandle BrowserRenderProcessHost::GetRendererProcessHandle() {
   if (run_renderer_in_process())
     return base::Process::Current().handle();
   return process_.handle();
 }
 
 void BrowserRenderProcessHost::InitVisitedLinks() {
   VisitedLinkMaster* visitedlink_master = profile()->GetVisitedLinkMaster();
@@ skipping 294 matching lines @@
   // child processes determine the pid of the parent.
   // Build the channel ID.  This is composed of a unique identifier for the
   // parent browser process, an identifier for the renderer/plugin instance,
   // and a random component. We use a random component so that a hacked child
   // process can't cause denial of service by causing future named pipe creation
   // to fail.
   return StringPrintf(L"%d.%x.%d",
                       base::GetCurrentProcId(), instance,
                       base::RandInt(0, std::numeric_limits<int>::max()));
 }