chrome: Cleanup class/struct forward declarations

chrome/browser/sync/test/integration/sync_test.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_SYNC_TEST_INTEGRATION_SYNC_TEST_H_
 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_SYNC_TEST_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 43 matching lines @@
 
 namespace fake_server {
 class FakeServer;
 class FakeServerInvalidationService;
 }  // namespace fake_server
 
 namespace net {
 class FakeURLFetcherFactory;
 class ScopedDefaultHostResolverProc;
 class URLFetcherImplFactory;
-class URLRequestContextGetter;
 }  // namespace net
 
 // This is the base class for integration tests for all sync data types. Derived
 // classes must be defined for each sync data type. Individual tests are defined
 // using the IN_PROC_BROWSER_TEST_F macro.
 class SyncTest : public InProcessBrowserTest {
  public:
   // The different types of live sync tests that can be implemented.
   enum TestType {
     // Tests where only one client profile is synced with the server. Typically
@@ skipping 384 matching lines @@
   std::unique_ptr<net::URLFetcherImplFactory> factory_;
 
   // The contents to be written to a profile's Preferences file before the
   // Profile object is created. If empty, no preexisting file will be written.
   std::string preexisting_preferences_file_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncTest);
 };
 
 #endif  // CHROME_BROWSER_SYNC_TEST_INTEGRATION_SYNC_TEST_H_