Add support for top level geolocation arbitrator, and access token persistenc...

chrome/browser/geolocation/access_token_store.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/geolocation/access_token_store.h"
+
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/common/pref_service.h"
+#include "googleurl/src/gurl.h"
+
+namespace {
+// Implementation of the geolocation access token store using chrome's prefs
+// store (local_state) to persist these tokens.
+// TODO(joth): Calls APIs which probably can't be used from the thread that it
+// will be run on; needs prefs access bounced via UI thread.
+class ChromePrefsAccessTokenStore : public AccessTokenStore {
+ public:
+  // AccessTokenStore
+  virtual bool SetAccessToken(const GURL& url,
+                              const string16& access_token) {
+    DictionaryValue* access_token_dictionary =
+        g_browser_process->local_state()->GetMutableDictionary(
+            prefs::kGeolocationAccessToken);
+    access_token_dictionary->SetWithoutPathExpansion(
+        UTF8ToWide(url.spec()),
+        Value::CreateStringValueFromUTF16(access_token));
+    return true;
+  }
+
+  virtual bool GetAccessToken(const GURL& url, string16* access_token) {
+    const DictionaryValue* access_token_dictionary =
+        g_browser_process->local_state()->GetDictionary(
+            prefs::kGeolocationAccessToken);
+    // Careful: The returned value could be NULL if the pref has never been set.
+    if (access_token_dictionary == NULL)
+      return false;
+    return access_token_dictionary->GetStringAsUTF16WithoutPathExpansion(
+        UTF8ToWide(url.spec()), access_token);
+  }
+};
+
+}  // namespace
+
+void AccessTokenStore::RegisterPrefs(PrefService* prefs) {
+  prefs->RegisterDictionaryPref(prefs::kGeolocationAccessToken);
+}
+
+AccessTokenStore* NewChromePrefsAccessTokenStore();