Implement cc::FilterOperations StructTraits

cc/output/filter_operations.h

Index: cc/output/filter_operations.h
diff --git a/cc/output/filter_operations.h b/cc/output/filter_operations.h
index 589b2f5f5bb107206fd809b7be1815f4b7b7c127..542da1f2b0db97a1f56acc18c22b7ac4a7621fec 100644
--- a/cc/output/filter_operations.h
+++ b/cc/output/filter_operations.h
@@ -33,10 +33,14 @@ class CC_EXPORT FilterOperations {
 
   FilterOperations(const FilterOperations& other);
 
+  explicit FilterOperations(std::vector<FilterOperation>&& operations);
+
   ~FilterOperations();
 
   FilterOperations& operator=(const FilterOperations& other);
 
+  FilterOperations& operator=(FilterOperations&& other);
+
   bool operator==(const FilterOperations& other) const;
 
   bool operator!=(const FilterOperations& other) const {
@@ -63,6 +67,8 @@ class CC_EXPORT FilterOperations {
     return operations_.size();
   }
 
+  const std::vector<FilterOperation>& operations() const { return operations_; }
+
   const FilterOperation& at(size_t index) const {
     DCHECK_LT(index, size());
     return operations_[index];