Provide StructTraits for a vector<SkBitmap>

skia/public/interfaces/test/struct_traits_unittest.cc

Index: skia/public/interfaces/test/struct_traits_unittest.cc
diff --git a/skia/public/interfaces/test/struct_traits_unittest.cc b/skia/public/interfaces/test/struct_traits_unittest.cc
index 7a18033fbea21cc9110743e611170f6dcea6f39f..26437059c1f3f1ae0b819ed163f4a41af32bd785 100644
--- a/skia/public/interfaces/test/struct_traits_unittest.cc
+++ b/skia/public/interfaces/test/struct_traits_unittest.cc
@@ -32,6 +32,11 @@ class StructTraitsTest : public testing::Test, public mojom::TraitsTestService {
     callback.Run(b);
   }
 
+  void EchoBitmapArray(const std::vector<SkBitmap>& t,
+                       const EchoBitmapArrayCallback& callback) override {
+    callback.Run(t);
+  }
+
   void EchoImageFilter(const sk_sp<SkImageFilter>& i,
                        const EchoImageFilterCallback& callback) override {
     callback.Run(i);
@@ -103,4 +108,28 @@ TEST_F(StructTraitsTest, DropShadowImageFilter) {
   EXPECT_EQ(input_str, output_str);
 }
 
+TEST_F(StructTraitsTest, BitmapArray) {
+  SkBitmap b1, b2;
+
+  SkImageInfo image_info1 = SkImageInfo::MakeN32(10, 5, kPremul_SkAlphaType);
+  b1.allocPixels(image_info1);
+
+  SkImageInfo image_info2 = SkImageInfo::MakeN32(11, 6, kPremul_SkAlphaType);
+  b2.allocPixels(image_info2);
+
+  std::vector<SkBitmap> vi;
+  vi.push_back(b1);
+  vi.push_back(b2);
+
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  std::vector<SkBitmap> vo;
+  proxy->EchoBitmapArray(vi, &vo);
+
+  EXPECT_EQ(vi.size(), vo.size());
+  for (size_t i = 0; i < vi.size(); i++) {
+    EXPECT_EQ(vi[i].width(), vo[i].width());
+    EXPECT_EQ(vi[i].height(), vo[i].height());
+  }
+}
+
 }  // namespace skia