Implement cc::FilterOperation StructTraits

skia/public/interfaces/test/struct_traits_unittest.cc

 // Copyright 2016 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.
 
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "skia/public/interfaces/test/traits_test_service.mojom.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkColorFilter.h"
 #include "third_party/skia/include/core/SkString.h"
 #include "third_party/skia/include/effects/SkColorFilterImageFilter.h"
+#include "third_party/skia/include/effects/SkDropShadowImageFilter.h"
 
 namespace skia {
 
 namespace {
 
 class StructTraitsTest : public testing::Test, public mojom::TraitsTestService {
  public:
   StructTraitsTest() {}
 
  protected:
@@ skipping 31 matching lines @@
   SkString input_str;
   input->toString(&input_str);
   mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
   sk_sp<SkImageFilter> output;
   proxy->EchoImageFilter(input, &output);
   SkString output_str;
   output->toString(&output_str);
   EXPECT_EQ(input_str, output_str);
 }
 
+TEST_F(StructTraitsTest, DropShadowImageFilter) {
+  sk_sp<SkImageFilter> input(SkDropShadowImageFilter::Make(
+      SkIntToScalar(3), SkIntToScalar(8), SkIntToScalar(4), SkIntToScalar(9),
+      SK_ColorBLACK,
+      SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr));
+  SkString input_str;
+  input->toString(&input_str);
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  sk_sp<SkImageFilter> output;
+  proxy->EchoImageFilter(input, &output);
+  SkString output_str;
+  output->toString(&output_str);
+  EXPECT_EQ(input_str, output_str);
+}
+
 }  // namespace skia