[chromedriver] Add Network Conditions Override Manager and tests

chrome/test/chromedriver/chrome/stub_web_view.h

 // Copyright (c) 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_TEST_CHROMEDRIVER_CHROME_STUB_WEB_VIEW_H_
 #define CHROME_TEST_CHROMEDRIVER_CHROME_STUB_WEB_VIEW_H_
 
 #include <list>
 #include <string>
 
@@ skipping 42 matching lines @@
   Status DispatchKeyEvents(const std::list<KeyEvent>& events) override;
   Status GetCookies(scoped_ptr<base::ListValue>* cookies) override;
   Status DeleteCookie(const std::string& name, const std::string& url) override;
   Status WaitForPendingNavigations(const std::string& frame_id,
                                    const base::TimeDelta& timeout,
                                    bool stop_load_on_timeout) override;
   Status IsPendingNavigation(const std::string& frame_id,
                              bool* is_pending) override;
   JavaScriptDialogManager* GetJavaScriptDialogManager() override;
   Status OverrideGeolocation(const Geoposition& geoposition) override;
+  Status OverrideNetworkConditions(
+      const NetworkConditions& network_conditions) override;
   Status CaptureScreenshot(std::string* screenshot) override;
   Status SetFileInputFiles(const std::string& frame,
                            const base::DictionaryValue& element,
                            const std::vector<base::FilePath>& files) override;
   Status TakeHeapSnapshot(scoped_ptr<base::Value>* snapshot) override;
   Status StartProfile() override;
   Status EndProfile(scoped_ptr<base::Value>* profile_data) override;
 
  private:
   std::string id_;
 };
 
 #endif  // CHROME_TEST_CHROMEDRIVER_CHROME_STUB_WEB_VIEW_H_