Move PluginLoaderClient to PluginLoaderPosix in its own file.

content/browser/plugin_loader_posix.cc

+// Copyright (c) 2011 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.
+
+#include "content/browser/plugin_loader_posix.h"
+
+#include "base/bind.h"
+#include "base/message_loop_proxy.h"
+#include "content/browser/browser_thread.h"
+#include "content/common/utility_messages.h"
+#include "webkit/plugins/npapi/plugin_list.h"
+
+namespace {
+
+void RunGetPluginsCallback(const PluginService::GetPluginsCallback& callback,
+                           const std::vector<webkit::WebPluginInfo> plugins) {
+  callback.Run(plugins);
+}
+
+}  // namespace
+
+// static
+void PluginLoaderPosix::LoadPlugins(
+    base::MessageLoopProxy* target_loop,
+    const PluginService::GetPluginsCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  PluginLoaderPosix* client = new PluginLoaderPosix(target_loop, callback);
+  UtilityProcessHost* process_host =
+      new UtilityProcessHost(client, BrowserThread::IO);
+  process_host->set_no_sandbox(true);
+#if defined(OS_MACOSX)
+  process_host->set_child_flags(ChildProcessHost::CHILD_ALLOW_HEAP_EXECUTION);
+#endif
+
+  std::vector<FilePath> extra_plugin_paths;
+  std::vector<FilePath> extra_plugin_dirs;
+  std::vector<webkit::WebPluginInfo> internal_plugins;
+  webkit::npapi::PluginList::Singleton()->GetPluginPathListsToLoad(
+      &extra_plugin_paths, &extra_plugin_dirs, &internal_plugins);
+
+  process_host->Send(new UtilityMsg_LoadPlugins(
+      extra_plugin_paths, extra_plugin_dirs, internal_plugins));
+}
+
+bool PluginLoaderPosix::OnMessageReceived(const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PluginLoaderPosix, message)
+    IPC_MESSAGE_HANDLER(UtilityHostMsg_LoadedPlugins, OnGotPlugins)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void PluginLoaderPosix::OnProcessCrashed(int exit_code) {
+  LOG(ERROR) << "Out-of-process plugin loader crashed with code " << exit_code
+             << ". You will have no plugins!";
+  // Don't leave callers hanging.
+  OnGotPlugins(std::vector<webkit::WebPluginInfo>());
+}
+
+PluginLoaderPosix::PluginLoaderPosix(
+    base::MessageLoopProxy* target_loop,
+    const PluginService::GetPluginsCallback& callback)
+    : target_loop_(target_loop),
+      callback_(callback) {
+}
+
+PluginLoaderPosix::~PluginLoaderPosix() {
+}
+
+void PluginLoaderPosix::OnGotPlugins(
+    const std::vector<webkit::WebPluginInfo>& plugins) {
+  webkit::npapi::PluginList::Singleton()->SetPlugins(plugins);
+  target_loop_->PostTask(FROM_HERE,
+      base::Bind(&RunGetPluginsCallback, callback_, plugins));
+}