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

gpu/command_buffer/service/sync_point_manager.h

Index: gpu/command_buffer/service/sync_point_manager.h
diff --git a/gpu/command_buffer/service/sync_point_manager.h b/gpu/command_buffer/service/sync_point_manager.h
index eea2dfc8d71f77fbe50573e8a71b2d06a2a2f4bf..367b3f04b20a50f78f0a076389395ec8b32def10 100644
--- a/gpu/command_buffer/service/sync_point_manager.h
+++ b/gpu/command_buffer/service/sync_point_manager.h
@@ -78,6 +78,7 @@ class GPU_EXPORT SyncPointOrderData
     OrderFence(uint32_t order,
                uint64_t release,
                scoped_refptr<SyncPointClientState> state);
+    OrderFence(const OrderFence& other);
     ~OrderFence();
 
     bool operator>(const OrderFence& rhs) const {
@@ -157,6 +158,7 @@ class GPU_EXPORT SyncPointClientState
     base::Closure callback_closure;
 
     ReleaseCallback(uint64_t release, const base::Closure& callback);
+    ReleaseCallback(const ReleaseCallback& other);
     ~ReleaseCallback();
 
     bool operator>(const ReleaseCallback& rhs) const {