Add caching for apps list search results.

chrome/browser/ui/app_list/search/common/webservice_cache_factory.h

Index: chrome/browser/ui/app_list/search/common/webservice_cache_factory.h
diff --git a/chrome/browser/ui/app_list/search/common/webservice_cache_factory.h b/chrome/browser/ui/app_list/search/common/webservice_cache_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..a7ad11b1348c87855a4bd34806171ae7084b8874
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+++ b/chrome/browser/ui/app_list/search/common/webservice_cache_factory.h
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+// Copyright 2013 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.
+
+#ifndef CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_CACHE_FACTORY_H_
+#define CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_CACHE_FACTORY_H_
+
+#include "components/browser_context_keyed_service/browser_context_keyed_service_factory.h"
+
+template<typename T> struct DefaultSingletonTraits;
+
+namespace content {
+class BrowserContext;
+}
+
+namespace app_list {
+
+class WebserviceCache;
+
+// Singleton that owns the WebserviceCaches and associates them with profiles;
+class WebserviceCacheFactory : public BrowserContextKeyedServiceFactory {
+ public:
+  // Returns singleton instance of WebserviceCacheFactory.
+  static WebserviceCacheFactory* GetInstance();
+
+  // Returns the Webservice cache associated with |context|.
+  static WebserviceCache* GetForBrowserContext(
+      content::BrowserContext* context);
+
+ private:
+  friend struct DefaultSingletonTraits<WebserviceCacheFactory>;
+
+  WebserviceCacheFactory();
+  virtual ~WebserviceCacheFactory();
+
+  // BrowserContextKeyedServiceFactory overrides:
+  virtual BrowserContextKeyedService* BuildServiceInstanceFor(
+      content::BrowserContext* context) const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(WebserviceCacheFactory);
+};
+
+}  // namespace app_list
+
+#endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_COMMON_WEBSERVICE_CACHE_FACTORY_H_