Rename {Author,UserAgent}ShadowRoot to {Open,Closed}ShadowRoot.

Source/core/html/forms/ColorInputType.cpp

Index: Source/core/html/forms/ColorInputType.cpp
diff --git a/Source/core/html/forms/ColorInputType.cpp b/Source/core/html/forms/ColorInputType.cpp
index ce6d1a8e4e8b04cd726831bf5878e24fa5eabe15..104b5b85b5656fadd2662da28325e36a832c7fa7 100644
--- a/Source/core/html/forms/ColorInputType.cpp
+++ b/Source/core/html/forms/ColorInputType.cpp
@@ -138,7 +138,7 @@ void ColorInputType::createShadowSubtree()
     RefPtrWillBeRawPtr<HTMLDivElement> colorSwatch = HTMLDivElement::create(document);
     colorSwatch->setShadowPseudoId(AtomicString("-webkit-color-swatch", AtomicString::ConstructFromLiteral));
     wrapperElement->appendChild(colorSwatch.release());
-    element().userAgentShadowRoot()->appendChild(wrapperElement.release());
+    element().closedShadowRoot()->appendChild(wrapperElement.release());
 
     element().updateView();
 }
@@ -227,7 +227,7 @@ void ColorInputType::updateView()
 
 HTMLElement* ColorInputType::shadowColorSwatch() const
 {
-    ShadowRoot* shadow = element().userAgentShadowRoot();
+    ShadowRoot* shadow = element().closedShadowRoot();
     return shadow ? toHTMLElement(shadow->firstChild()->firstChild()) : 0;
 }