Remove unnecessary zoom argument from GetImage() as its value is always available through the Layou…

third_party/WebKit/Source/core/layout/LayoutImageResourceStyleImage.cpp

Index: third_party/WebKit/Source/core/layout/LayoutImageResourceStyleImage.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutImageResourceStyleImage.cpp b/third_party/WebKit/Source/core/layout/LayoutImageResourceStyleImage.cpp
index b471cc0c57ddb17f6c26a70715e84f252c27f278..8ff2c93f818995b9278ce47d813baa2c72c8fc21 100644
--- a/third_party/WebKit/Source/core/layout/LayoutImageResourceStyleImage.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutImageResourceStyleImage.cpp
@@ -58,13 +58,13 @@ void LayoutImageResourceStyleImage::Shutdown() {
   cached_image_ = nullptr;
 }
 
-PassRefPtr<Image> LayoutImageResourceStyleImage::GetImage(const IntSize& size,
-                                                          float zoom) const {
+PassRefPtr<Image> LayoutImageResourceStyleImage::GetImage(
+    const IntSize& size) const {
   // Generated content may trigger calls to image() while we're still pending,
   // don't assert but gracefully exit.
   if (style_image_->IsPendingImage())
     return nullptr;
-  return style_image_->GetImage(*layout_object_, size, zoom);
+  return style_image_->GetImage(*layout_object_, size);
 }
 
 LayoutSize LayoutImageResourceStyleImage::ImageSize(float multiplier) const {