Break StyleImage dependency on LayoutObject

third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/csspaint/CSSPaintDefinition.h"
 
 #include "bindings/core/v8/V8BindingForCore.h"
 #include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/css/cssom/FilteredComputedStylePropertyMap.h"
 #include "core/dom/ExecutionContext.h"
@@ skipping 50 matching lines @@
       did_call_constructor_(false),
       has_alpha_(has_alpha) {
   native_invalidation_properties_.swap(native_invalidation_properties);
   custom_invalidation_properties_.swap(custom_invalidation_properties);
   input_argument_types_.swap(input_argument_types);
 }
 
 CSSPaintDefinition::~CSSPaintDefinition() {}
 
 PassRefPtr<Image> CSSPaintDefinition::Paint(
-    const LayoutObject& layout_object,
+    const ImageResourceObserver& client,
     const IntSize& size,
     const CSSStyleValueVector* paint_arguments) {
   DCHECK(paint_arguments);
 
+  // TODO: Break dependency on LayoutObject.

[ikilpatrick, 2017/06/13 18:41:01]

todo: add node.

+  const LayoutObject& layout_object = static_cast<const LayoutObject&>(client);
+
   float zoom = layout_object.StyleRef().EffectiveZoom();
   const IntSize specified_size = GetSpecifiedSize(size, zoom);
 
   ScriptState::Scope scope(script_state_.Get());
 
   MaybeCreatePaintInstance();
 
   v8::Isolate* isolate = script_state_->GetIsolate();
   v8::Local<v8::Object> instance = instance_.NewLocal(isolate);
 
@@ skipping 60 matching lines @@
   did_call_constructor_ = true;
 }
 
 DEFINE_TRACE_WRAPPERS(CSSPaintDefinition) {
   visitor->TraceWrappers(constructor_.Cast<v8::Value>());
   visitor->TraceWrappers(paint_.Cast<v8::Value>());
   visitor->TraceWrappers(instance_.Cast<v8::Value>());
 }
 
 }  // namespace blink