Implement people search.

chrome/browser/ui/app_list/search/people/people_provider.h

+// 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_PEOPLE_PEOPLE_PROVIDER_H_
+#define CHROME_BROWSER_UI_APP_LIST_SEARCH_PEOPLE_PEOPLE_PROVIDER_H_
+
+#include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/app_list/search/common/webservice_search_provider.h"
+#include "google_apis/gaia/oauth2_token_service.h"
+#include "url/gurl.h"
+
+class AppListControllerDelegate;
+
+namespace base {
+class DictionaryValue;
+}
+
+namespace app_list {
+
+namespace test {
+class PeopleProviderTest;
+}
+
+class ChromeSearchResult;
+class JSONResponseFetcher;
+
+// PeopleProvider fetches search results from the web store server.
+// A "Search in web store" result will be returned if the server does not
+// return any results.
+class PeopleProvider : public WebserviceSearchProvider,
+                        public OAuth2TokenService::Consumer {

[xiyuan, 2013/09/04 23:15:41]

nit: alignment

[rkc, 2013/09/04 23:48:02]

Done.

+ public:
+  explicit PeopleProvider(Profile* profile);
+  virtual ~PeopleProvider();
+
+  // SearchProvider overrides:
+  virtual void Start(const base::string16& query) OVERRIDE;
+  virtual void Stop() OVERRIDE;
+
+  // OAuth2TokenService::Consumer implementation.

[xiyuan, 2013/09/04 23:15:41]

nit: Use overrides: since it is used above. 

[rkc, 2013/09/04 23:48:02]

Done.

+  virtual void OnGetTokenSuccess(
+      const OAuth2TokenService::Request* request,
+      const std::string& access_token,
+      const base::Time& expiration_time) OVERRIDE;
+  virtual void OnGetTokenFailure(
+      const OAuth2TokenService::Request* request,
+      const GoogleServiceAuthError& error) OVERRIDE;
+
+ private:
+  friend class app_list::test::PeopleProviderTest;
+
+  // Start a request for getting the access token for people search.
+  void RequestAccessToken();
+  // Invalidate our existing token so a new one can be fetched.
+  void InvalidateToken();
+
+  // Get the full people search query URL. This URL includes the OAuth refresh
+  // token for authenticating the current user.
+  GURL GetQueryUrl(const std::string& query);
+
+  // Start the search request with |query_|.
+  void StartQuery();
+
+  void OnPeopleSearchFetched(scoped_ptr<base::DictionaryValue> json);
+  void ProcessPeopleSearchResults(const base::DictionaryValue* json);
+  scoped_ptr<ChromeSearchResult> CreateResult(
+      const base::DictionaryValue& dict);
+
+  // Setup the various variables that we override for testing.
+  void SetupForTest(const base::Closure& people_search_fetched_callback,
+                    const std::string& people_search_url);
+
+  scoped_ptr<JSONResponseFetcher> people_search_;
+  base::Closure people_search_fetched_callback_;
+
+  std::string access_token_;
+  scoped_ptr<OAuth2TokenService::Request> access_token_request_;
+  OAuth2TokenService::ScopeSet oauth2_scope_;
+
+  // The current query.
+  std::string query_;
+  std::string people_search_url_;

[xiyuan, 2013/09/04 23:15:41]

Store url in GURL.

[rkc, 2013/09/04 23:48:02]

Done.

+
+  bool running_as_test_;
+
+  DISALLOW_COPY_AND_ASSIGN(PeopleProvider);
+};
+
+}  // namespace app_list
+
+#endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_PEOPLE_PEOPLE_PROVIDER_H_