Add PluginDataRemover.

chrome/browser/plugin_data_remover.cc

+// Copyright (c) 2010 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 "chrome/browser/plugin_data_remover.h"
+
+#include "base/message_loop_proxy.h"
+#include "chrome/browser/browser_thread.h"
+#include "chrome/browser/plugin_service.h"
+#include "chrome/common/plugin_messages.h"
+#include "ipc/ipc_channel.h"
+
+#if defined(OS_POSIX)
+#include "ipc/ipc_channel_posix.h"
+#endif
+
+namespace {
+const std::string flash_mime_type = "application/x-shockwave-flash";
+const int64 timeout_ms = 10000;
+}
+
+PluginDataRemover::PluginDataRemover()
+    : channel_(NULL),
+      method_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+}
+
+PluginDataRemover::~PluginDataRemover() {
+  DCHECK(!done_task_.get());
+  if (!BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, channel_))
+    delete channel_;
+}
+
+void PluginDataRemover::StartRemoving(base::Time begin_time, Task* done_task) {
+  DCHECK(!done_task_.get());
+  begin_time_ = begin_time;
+
+  message_loop_ = base::MessageLoopProxy::CreateForCurrentThread();
+  done_task_.reset(done_task);
+
+  PluginService::GetInstance()->OpenChannelToPlugin(
+      GURL(), flash_mime_type, this);
+
+  MessageLoop::current()->PostDelayedTask(
+      FROM_HERE,
+      method_factory_.NewRunnableMethod(&PluginDataRemover::OnTimeout),
+      timeout_ms);
+}
+
+int PluginDataRemover::ID() {
+  // Generate an ID for the browser process.
+  static int id = ChildProcessInfo::GenerateChildProcessUniqueId();

[jam, 2010/11/12 20:44:58]

i think there could be race conditions if two of these objects are created right
after each other?  why not just have an id that's constant per object?

+  return id;
+}
+
+bool PluginDataRemover::OffTheRecord() {
+  return false;
+}
+
+void PluginDataRemover::SetPluginInfo(const WebPluginInfo& info) {
+}
+
+void PluginDataRemover::OnChannelOpened(const IPC::ChannelHandle& handle) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK(!channel_);
+#if defined(OS_POSIX)
+  // If we received a ChannelHandle, register it now.
+  if (handle.socket.fd >= 0)
+    IPC::AddChannelSocket(handle.name, handle.socket.fd);
+#endif
+  channel_ = new IPC::Channel(handle.name, IPC::Channel::MODE_CLIENT, this);
+  if (!channel_->Connect()) {
+    NOTREACHED() << "Couldn't connect to plugin";
+    SignalDone();
+    return;
+  }
+
+  if (!channel_->Send(
+          new PluginMsg_ClearSiteData(0, std::string(), begin_time_))) {
+    NOTREACHED() << "Couldn't send ClearSiteData message";
+    SignalDone();
+  }
+}
+
+void PluginDataRemover::OnError() {
+  NOTREACHED() << "Couldn't open plugin channel";
+  SignalDone();
+}
+
+void PluginDataRemover::OnClearSiteDataResult(bool success) {
+  DCHECK(success) << "ClearSiteData returned error";
+  SignalDone();
+}
+
+void PluginDataRemover::OnTimeout() {
+  NOTREACHED() << "Timed out";
+  SignalDone();
+}
+
+void PluginDataRemover::OnMessageReceived(const IPC::Message& msg) {
+  IPC_BEGIN_MESSAGE_MAP(PluginDataRemover, msg)
+    IPC_MESSAGE_HANDLER(PluginHostMsg_ClearSiteDataResult,
+                        OnClearSiteDataResult)
+    IPC_MESSAGE_UNHANDLED_ERROR()
+  IPC_END_MESSAGE_MAP()
+}
+
+void PluginDataRemover::OnChannelError() {
+  NOTREACHED() << "Channel error";
+  SignalDone();
+}
+
+void PluginDataRemover::SignalDone() {
+  message_loop_->PostTask(FROM_HERE, done_task_.release());
+  message_loop_ = NULL;
+}