Added Protector, hooked up DSE verification with error bubble.

chrome/browser/protector/protector.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 "chrome/browser/protector/protector.h"
+
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "chrome/browser/protector/settings_change_global_error.h"
+#include "chrome/browser/protector/keys.h"
+#include "chrome/browser/search_engines/template_url_service_factory.h"
+#include "chrome/browser/ui/browser.h"
+#include "content/browser/browser_thread.h"
+#include "crypto/hmac.h"
+
+namespace protector {
+
+Protector::Protector() {
+}
+
+Protector::~Protector() {
+  STLDeleteElements(&changes_);
+}
+
+void Protector::AddChange(SettingChange* change) {
+  if (error_.get()) {
+    NOTREACHED() << "Adding setting change after showing the error.";
+    return;
+  }
+  changes_.push_back(change);
+}
+
+void Protector::NotifyUser() {
+  DCHECK(!changes_.empty());
+
+  error_.reset(new SettingsChangeGlobalError(changes_, this));
+  error_->ShowForDefaultProfile();
+}
+
+void Protector::OpenTab(const GURL& url) {
+  if (!error_.get() || !error_->browser()) {
+    LOG(WARNING) << "Don't have browser to show tab in.";
+    return;
+  }
+  error_->browser()->ShowSingletonTab(url);
+}
+
+TemplateURLService* Protector::GetTemplateURLService() {
+  if (!error_.get() || !error_->profile()) {
+    LOG(WARNING) << "Don't have profile to get to search engines.";
+    return NULL;
+  }
+  return TemplateURLServiceFactory::GetForProfile(error_->profile());
+}
+
+void Protector::OnApplyChanges() {
+  for (size_t i = 0; i < changes_.size(); ++i)
+    changes_[i]->Accept(this);
+  BrowserThread::DeleteSoon(BrowserThread::UI, FROM_HERE, this);
+}
+
+void Protector::OnDiscardChanges() {
+  for (size_t i = 0; i < changes_.size(); ++i)
+    changes_[i]->Revert(this);
+  BrowserThread::DeleteSoon(BrowserThread::UI, FROM_HERE, this);
+}
+
+void Protector::OnDecisionTimeout() {
+  OnDiscardChanges();

[Ivan Korotkov, 2011/10/20 21:04:52]

This means the settings page will be opened automagically after 10 minutes if
user ignores the menu item, doesn't it?

[whywhat, 2011/10/20 23:02:39]

Right, fixed.

+}
+
+
+void NotifyUserOfChange(SettingChange* change) {
+  Protector* protector = new Protector();
+  protector->AddChange(change);
+  protector->NotifyUser();
+}
+
+std::string SignSetting(const std::string& value) {
+  crypto::HMAC hmac(crypto::HMAC::SHA256);
+  DCHECK(hmac.Init(kProtectorSigningKey));
+
+  std::vector<unsigned char> digest(hmac.DigestLength());
+  DCHECK(hmac.Sign(value, &digest[0], digest.size()));
+
+  return std::string(&digest[0], &digest[0] + digest.size());
+}
+
+}  // namespace protector