| Index: third_party/WebKit/Source/platform/BUILD.gn | 
| diff --git a/third_party/WebKit/Source/platform/BUILD.gn b/third_party/WebKit/Source/platform/BUILD.gn | 
| index d43ec77c7d77d0b54e2e96a917ed6f9c40e9fbea..0a49563d984404c75492e19d278609d8a5bb3f21 100644 | 
| --- a/third_party/WebKit/Source/platform/BUILD.gn | 
| +++ b/third_party/WebKit/Source/platform/BUILD.gn | 
| @@ -1606,6 +1606,7 @@ static_library("test_support") { | 
| "testing/MessageLoopForMojo.h", | 
| "testing/PaintPrinters.cpp", | 
| "testing/PaintPrinters.h", | 
| +    "testing/PaintPropertyTestHelpers.h", | 
| "testing/PictureMatchers.cpp", | 
| "testing/PictureMatchers.h", | 
| "testing/PlatformTestPrinters.cpp", | 
|  |