Use new gmock MOCK_FUNCTION macro.

Bug: None
Change-Id: If436fbf5c2392051caeadfc4a7482544d565b597
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/19720
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/tests/unittests/PlacementAllocatedTests.cpp b/src/tests/unittests/PlacementAllocatedTests.cpp
index d483d6e..9ff7d1d 100644
--- a/src/tests/unittests/PlacementAllocatedTests.cpp
+++ b/src/tests/unittests/PlacementAllocatedTests.cpp
@@ -28,7 +28,7 @@
 
     class MockDestructor {
       public:
-        MOCK_METHOD2(Call, void(void*, DestructedClass));
+        MOCK_METHOD(void, Call, (void*, DestructedClass));
     };
 
     std::unique_ptr<StrictMock<MockDestructor>> mockDestructor;