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

gpu/config/gpu_info.h

Index: gpu/config/gpu_info.h
diff --git a/gpu/config/gpu_info.h b/gpu/config/gpu_info.h
index 8003c930b6930b98e890339d3a2c0339b14501e2..568bd46452e9c9480a7d4754e35e36169c313f32 100644
--- a/gpu/config/gpu_info.h
+++ b/gpu/config/gpu_info.h
@@ -67,6 +67,8 @@ using VideoDecodeAcceleratorSupportedProfiles =
 
 struct GPU_EXPORT VideoDecodeAcceleratorCapabilities {
   VideoDecodeAcceleratorCapabilities();
+  VideoDecodeAcceleratorCapabilities(
+      const VideoDecodeAcceleratorCapabilities& other);
   ~VideoDecodeAcceleratorCapabilities();
   VideoDecodeAcceleratorSupportedProfiles supported_profiles;
   uint32_t flags;
@@ -107,6 +109,7 @@ struct GPU_EXPORT GPUInfo {
   };
 
   GPUInfo();
+  GPUInfo(const GPUInfo& other);
   ~GPUInfo();
 
   bool SupportsAccelerated2dCanvas() const {