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

gpu/config/gpu_test_config.h

 // Copyright (c) 2012 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 GPU_CONFIG_GPU_TEST_CONFIG_H_
 #define GPU_CONFIG_GPU_TEST_CONFIG_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 39 matching lines @@
 
   enum API {
     kAPIUnknown = 0,
     kAPID3D9 = 1 << 0,
     kAPID3D11 = 1 << 1,
     kAPIGLDesktop = 1 << 2,
     kAPIGLES = 1 << 3,
   };
 
   GPUTestConfig();
+  GPUTestConfig(const GPUTestConfig& other);
   virtual ~GPUTestConfig();
 
   void set_os(int32_t os);
   void set_gpu_device_id(uint32_t id);
   void set_build_type(int32_t build_type);
   void set_api(int32_t api);
 
   virtual void AddGPUVendor(uint32_t gpu_vendor);
 
   int32_t os() const { return os_; }
@@ skipping 67 matching lines @@
   static bool CurrentConfigMatches(const std::vector<std::string>& configs);
 
   // Check if the bot has blacklisted all GPU features.
   static bool GpuBlacklistedOnBot();
 };
 
 }  // namespace gpu
 
 #endif  // GPU_CONFIG_GPU_TEST_CONFIG_H_