Added Protector, hooked up DSE verification with error bubble.

chrome/browser/webdata/keyword_table.cc

Index: chrome/browser/webdata/keyword_table.cc
diff --git a/chrome/browser/webdata/keyword_table.cc b/chrome/browser/webdata/keyword_table.cc
index e6cf033cb81f01baedb7b5ac05fc21a098a9b59a..d4d6c206f62327d9b7901923495f9a830a9ebfab 100644
--- a/chrome/browser/webdata/keyword_table.cc
+++ b/chrome/browser/webdata/keyword_table.cc
@@ -10,8 +10,9 @@
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/history/history_database.h"
+#include "chrome/browser/protector/protector.h"
+#include "chrome/browser/protector/setting_change.h"
 #include "chrome/browser/search_engines/template_url.h"
-#include "crypto/hmac.h"
 #include "googleurl/src/gurl.h"
 #include "sql/statement.h"
 
@@ -26,11 +27,6 @@ const int kUrlIdPosition = 18;
 const char kDefaultSearchProviderKey[] = "Default Search Provider ID";
 const char kBuiltinKeywordVersion[] = "Builtin Keyword Version";
 
-// Key for signing the default search provider backup.
-// TOOD(avayvod): Add key for Google Chrome to internal repository.
-const char kDefaultSearchProviderBackupSigningKey[] =
-    "Please, don't change default search engine!";
-
 // Meta table key to store backup value for the default search provider.
 const char kDefaultSearchProviderBackupKey[] =
     "Default Search Provider ID Backup";
@@ -76,14 +72,7 @@ void BindURLToStatement(const TemplateURL& url, sql::Statement* s) {
 
 // Signs search provider id and returns its signature.
 std::string GetSearchProviderIDSignature(int64 id) {
-  crypto::HMAC hmac(crypto::HMAC::SHA256);
-  DCHECK(hmac.Init(kDefaultSearchProviderBackupSigningKey));
-
-  std::string id_to_sign(base::Int64ToString(id));
-  std::vector<unsigned char> digest(hmac.DigestLength());
-  DCHECK(hmac.Sign(id_to_sign, &digest[0], digest.size()));
-
-  return std::string(&digest[0], &digest[0] + digest.size());
+  return protector::SignSetting(base::Int64ToString(id));
 }
 
 // Checks if signature for search provider id is correct and returns the
@@ -258,6 +247,23 @@ bool KeywordTable::UpdateKeyword(const TemplateURL& url) {
   return s.Run();
 }
 
+string16 KeywordTable::GetKeywordShortName(int64 id) {
+  sql::Statement s(db_->GetUniqueStatement(
+      "SELECT short_name FROM keywords WHERE id=?"));
+  if (!s) {
+    NOTREACHED() << "Statement prepare failed";
+    return string16();
+  }
+  s.BindInt64(0, id);
+  if (s.Step()) {
+    std::string short_name(s.ColumnString(0));
+    DCHECK(!short_name.empty());
+    return UTF8ToUTF16(short_name);
+  }
+  LOG(WARNING) << "Keyword with id " << id << " is not found.";
+  return string16();
+}
+
 bool KeywordTable::SetDefaultSearchProviderID(int64 id) {
   return meta_table_->SetValue(kDefaultSearchProviderKey, id) &&
       SetDefaultSearchProviderBackupID(id);
@@ -272,12 +278,18 @@ int64 KeywordTable::GetDefaultSearchProviderID() {
   meta_table_->GetValue(
       kDefaultSearchProviderBackupSignatureKey, &backup_signature);
   if (!IsSearchProviderIDValid(backup_value, backup_signature)) {
-    // TODO(avayvod): Notify UI about the setting having been hijacked and
-    // the backup value lost.
-    return value;
+    protector::SettingChange* change =
+        protector::CreateDefaultSearchProviderChange(this, 0, value);
+    protector::NotifyUserOfChange(change);
+    SetDefaultSearchProviderID(0);
+    return 0;
   }
   if (value != backup_value) {
-    // TODO(avayvod): Notify UI about the setting having been hijacked.
+    protector::SettingChange* change =
+        protector::CreateDefaultSearchProviderChange(
+            this, backup_value, value);
+    protector::NotifyUserOfChange(change);
+    SetDefaultSearchProviderID(backup_value);
     return backup_value;
   }
   return value;