chrome: Add out-of-line copy ctors for complex classes.

chrome/browser/extensions/extension_service_test_base.h

 // Copyright 2014 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_EXTENSIONS_EXTENSION_SERVICE_TEST_BASE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_TEST_BASE_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 40 matching lines @@
     base::FilePath profile_path;
     base::FilePath pref_file;
     base::FilePath extensions_install_dir;
     bool autoupdate_enabled;    // defaults to false.
     bool is_first_run;          // defaults to true.
     bool profile_is_supervised; // defaults to false.
 
     // Though you could use this constructor, you probably want to use
     // CreateDefaultInitParams(), and then make a change or two.
     ExtensionServiceInitParams();
+    ExtensionServiceInitParams(const ExtensionServiceInitParams& other);
   };
 
   // Public because parameterized test cases need it to be, or else the compiler
   // barfs.
   static void SetUpTestCase();  // faux-verride (static override).
 
  protected:
   ExtensionServiceTestBase();
   ~ExtensionServiceTestBase() override;
 
@@ skipping 99 matching lines @@
   chromeos::ScopedTestCrosSettings test_cros_settings_;
   chromeos::ScopedTestUserManager test_user_manager_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionServiceTestBase);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_TEST_BASE_H_