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

third_party/WebKit/Source/core/style/StyleImage.h

Index: third_party/WebKit/Source/core/style/StyleImage.h
diff --git a/third_party/WebKit/Source/core/style/StyleImage.h b/third_party/WebKit/Source/core/style/StyleImage.h
index 03a522256f1606853764928b2a3fee1cc3bd20da..8a03b62a459b445f3b2269ee91b874d9e74ef0f3 100644
--- a/third_party/WebKit/Source/core/style/StyleImage.h
+++ b/third_party/WebKit/Source/core/style/StyleImage.h
@@ -63,12 +63,11 @@ class CORE_EXPORT StyleImage : public GarbageCollectedFinalized<StyleImage> {
   virtual bool UsesImageContainerSize() const = 0;
   virtual void AddClient(LayoutObject*) = 0;
   virtual void RemoveClient(LayoutObject*) = 0;
-  // Note that the containerSize is assumed to be in the effective
-  // zoom level given by multiplier, i.e if the multiplier is the
-  // constant 1 the containerSize should be unzoomed.
+  // Note that the container_size is in the effective zoom level of
+  // the style that applies to the given LayoutObject, i.e if the zoom
+  // level is 1.0 the container_size should be unzoomed.
   virtual PassRefPtr<Image> GetImage(const LayoutObject&,
-                                     const IntSize& container_size,
-                                     float multiplier) const = 0;
+                                     const IntSize& container_size) const = 0;
   virtual WrappedImagePtr Data() const = 0;
   virtual float ImageScaleFactor() const { return 1; }
   virtual bool KnownToBeOpaque(const LayoutObject&) const = 0;