Implement cc::FilterOperations StructTraits

cc/ipc/struct_traits_unittest.cc

Index: cc/ipc/struct_traits_unittest.cc
diff --git a/cc/ipc/struct_traits_unittest.cc b/cc/ipc/struct_traits_unittest.cc
index e20018d4f33d3dd5ee80eabbcabd519d342bb1d2..606fc0d0c23807181a5043c62d765d59d5fd2e96 100644
--- a/cc/ipc/struct_traits_unittest.cc
+++ b/cc/ipc/struct_traits_unittest.cc
@@ -43,6 +43,12 @@ class StructTraitsTest : public testing::Test, public mojom::TraitsTestService {
     callback.Run(f);
   }
 
+  void EchoFilterOperations(
+      const FilterOperations& f,
+      const EchoFilterOperationsCallback& callback) override {
+    callback.Run(f);
+  }
+
   void EchoRenderPassId(const RenderPassId& r,
                         const EchoRenderPassIdCallback& callback) override {
     callback.Run(r);
@@ -241,6 +247,20 @@ TEST_F(StructTraitsTest, FilterOperation) {
   }
 }
 
+TEST_F(StructTraitsTest, FilterOperations) {
+  FilterOperations input;
+  input.Append(FilterOperation::CreateBlurFilter(0.f));
+  input.Append(FilterOperation::CreateSaturateFilter(4.f));
+  input.Append(FilterOperation::CreateZoomFilter(2.0f, 1));
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  FilterOperations output;
+  proxy->EchoFilterOperations(input, &output);
+  EXPECT_EQ(input.size(), output.size());
+  for (size_t i = 0; i < input.size(); ++i) {
+    EXPECT_EQ(input.at(i), output.at(i));
+  }
+}
+
 TEST_F(StructTraitsTest, RenderPassId) {
   const int layer_id = 1337;
   const uint32_t index = 0xdeadbeef;