Use unsigned longs in HTMLImageElement idl

third_party/WebKit/Source/modules/shapedetection/FaceDetector.cpp

Index: third_party/WebKit/Source/modules/shapedetection/FaceDetector.cpp
diff --git a/third_party/WebKit/Source/modules/shapedetection/FaceDetector.cpp b/third_party/WebKit/Source/modules/shapedetection/FaceDetector.cpp
index 037586df0949ead12c479b2844301c681a0e6350..eadf3eb0ae2c8255c96b8c4b276a634b3d7c8022 100644
--- a/third_party/WebKit/Source/modules/shapedetection/FaceDetector.cpp
+++ b/third_party/WebKit/Source/modules/shapedetection/FaceDetector.cpp
@@ -115,8 +115,8 @@ ScriptPromise FaceDetector::detectFacesOnImageElement(
   }
 
   const sk_sp<SkImage> image = blinkImage->imageForCurrentFrame();
-  DCHECK_EQ(img->naturalWidth(), image->width());
-  DCHECK_EQ(img->naturalHeight(), image->height());
+  DCHECK_EQ(img->naturalWidth(), static_cast<unsigned>(image->width()));
+  DCHECK_EQ(img->naturalHeight(), static_cast<unsigned>(image->height()));
 
   if (!image) {
     resolver->reject(DOMException::create(