Validate incoming window properties.

ui/aura/mus/property_converter_unittest.cc

Index: ui/aura/mus/property_converter_unittest.cc
diff --git a/ui/aura/mus/property_converter_unittest.cc b/ui/aura/mus/property_converter_unittest.cc
index e39c827a37427e5328f714eb8539e7fe202a41fb..b3c44449640dda8366f9f81b21d1a7f5e4738d3c 100644
--- a/ui/aura/mus/property_converter_unittest.cc
+++ b/ui/aura/mus/property_converter_unittest.cc
@@ -77,7 +77,8 @@ void TestPrimitiveProperty(PropertyConverter* property_converter,
                            const char* transport_name,
                            T value_1,
                            T value_2) {
-  property_converter->RegisterProperty(key, transport_name);
+  property_converter->RegisterProperty(key, transport_name,
+                                       PropertyConverter::AcceptAnyValue());
   EXPECT_EQ(transport_name,
             property_converter->GetTransportNameForPropertyKey(key));
   EXPECT_TRUE(property_converter->IsTransportNameRegistered(transport_name));
@@ -112,6 +113,10 @@ void TestPrimitiveProperty(PropertyConverter* property_converter,
   EXPECT_EQ(value_2, static_cast<T>(decoded_value_2));
 }
 
+bool OnlyAllowNegativeNumbers(int32_t number) {
+  return number < 0;
+}
+
 }  // namespace
 
 using PropertyConverterTest = test::AuraTestBase;
@@ -165,6 +170,30 @@ TEST_F(PropertyConverterTest, PrimitiveProperties) {
                         kTestPropertyServerKey9, value_9a, value_9b);
 }
 
+TEST_F(PropertyConverterTest, TestPrimitiveVerifier) {
+  std::unique_ptr<Window> window(CreateNormalWindow(1, root_window(), nullptr));
+
+  PropertyConverter property_converter;
+  property_converter.RegisterProperty(kTestPropertyKey8,
+                                      kTestPropertyServerKey8,
+                                      base::Bind(&OnlyAllowNegativeNumbers));
+
+  // Test that we reject invalid TransportValues during
+  // GetPropertyValueFromTransportValue().
+  int64_t int_value = 5;
+  std::vector<uint8_t> transport =
+      mojo::ConvertTo<std::vector<uint8_t>>(int_value);
+  EXPECT_FALSE(property_converter.GetPropertyValueFromTransportValue(
+      kTestPropertyServerKey8, transport, &int_value));
+
+  // Test that we reject invalid TransportValues during
+  // SetPropertyFromTransportValue().
+  EXPECT_EQ(-1, window->GetProperty(kTestPropertyKey8));
+  property_converter.SetPropertyFromTransportValue(
+      window.get(), kTestPropertyServerKey8, &transport);
+  EXPECT_EQ(-1, window->GetProperty(kTestPropertyKey8));
+}
+
 // Verifies property setting behavior for a gfx::ImageSkia* property.
 TEST_F(PropertyConverterTest, ImageSkiaProperty) {
   PropertyConverter property_converter;