Added Protector, hooked up DSE verification with error bubble.

chrome/browser/protector/default_search_provider_change.cc

Index: chrome/browser/protector/default_search_provider_change.cc
diff --git a/chrome/browser/protector/default_search_provider_change.cc b/chrome/browser/protector/default_search_provider_change.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6ffb7de569db72a23d5a5a0bcae1d5c513385429
--- /dev/null
+++ b/chrome/browser/protector/default_search_provider_change.cc
@@ -0,0 +1,109 @@
+// 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 "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/logging.h"
+#include "chrome/browser/protector/protector.h"
+#include "chrome/browser/protector/setting_change.h"
+#include "chrome/browser/search_engines/template_url.h"
+#include "chrome/browser/search_engines/template_url_service.h"
+#include "chrome/browser/webdata/keyword_table.h"
+#include "chrome/common/url_constants.h"
+#include "googleurl/src/gurl.h"
+
+namespace protector {
+
+class DefaultSearchProviderChange : public SettingChange {
+ public:
+  DefaultSearchProviderChange(
+      KeywordTable* table,
+      int64 old_id,
+      int64 new_id);
+
+  // SettingChange overrides:
+  virtual const string16& GetOldSetting() const OVERRIDE;
+  virtual const string16& GetNewSetting() const OVERRIDE;
+  virtual void Accept(Protector* protector) OVERRIDE;
+  virtual void Revert(Protector* protector) OVERRIDE;
+
+ private:
+  ~DefaultSearchProviderChange();
+
+  // ID of the new default search provider to be accepted.
+  int64 new_id_;
+
+  // Short name of the old default search provider.
+  string16 old_name_;
+
+  // Short name of the new default search provider.
+  string16 new_name_;
+
+  DISALLOW_COPY_AND_ASSIGN(DefaultSearchProviderChange);
+};
+
+DefaultSearchProviderChange::DefaultSearchProviderChange(
+    KeywordTable* table,
+    int64 old_id,
+    int64 new_id)
+    : SettingChange(kSearchEngineChanged),
+      new_id_(new_id),
+      old_name_(table->GetKeywordShortName(old_id)),
+      new_name_(table->GetKeywordShortName(new_id)) {
+}
+
+DefaultSearchProviderChange::~DefaultSearchProviderChange() {
+}
+
+const string16& DefaultSearchProviderChange::GetOldSetting() const {
+  return old_name_;
+}
+
+const string16& DefaultSearchProviderChange::GetNewSetting() const {
+  return new_name_;
+}
+
+void DefaultSearchProviderChange::Accept(Protector* protector) {
+  DCHECK(protector);
+  TemplateURLService* url_service = protector->GetTemplateURLService();
+  if (!url_service) {
+    LOG(WARNING) << "Can't get TemplateURLService object.";
+    return;
+  }
+  const TemplateURLService::TemplateURLVector& urls =
+      url_service->GetTemplateURLs();
+  for (size_t i = 0; i < urls.size(); ++i) {
+    if (urls[i]->id() == new_id_) {
+      url_service->SetDefaultSearchProvider(urls[i]);
+      return;
+    }
+  }
+  LOG(WARNING) << "Didn't find search provider with id " << new_id_;
+  // TODO(avayvod): Add histrogram.
+}
+
+void DefaultSearchProviderChange::Revert(Protector* protector) {
+  DCHECK(protector);
+  if (old_name_.empty()) {
+    TemplateURLService* url_service = protector->GetTemplateURLService();
+    if (url_service)
+      url_service->SetDefaultSearchProvider(NULL);
+    else
+      LOG(WARNING) << "Can't get TemplateURLService object.";
+    // Open settings page in case the original setting was lost.
+    protector->OpenTab(
+        GURL(std::string(chrome::kChromeUISettingsURL) +
+            chrome::kSearchEnginesSubPage));
+  }
+  // TODO(avayvod): Add histrogram.
+}
+
+SettingChange* CreateDefaultSearchProviderChange(
+    KeywordTable* table,
+    int64 old_id,
+    int64 new_id) {
+  return new DefaultSearchProviderChange(table, old_id, new_id);
+}
+
+}  // namespace protector