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

Source/core/html/forms/SearchInputType.cpp

Index: Source/core/html/forms/SearchInputType.cpp
diff --git a/Source/core/html/forms/SearchInputType.cpp b/Source/core/html/forms/SearchInputType.cpp
index e09e938df8559ab947f63b3d424a13150e4c0f7d..bf8c00fa029a9883500569413d732c8e9ca56767 100644
--- a/Source/core/html/forms/SearchInputType.cpp
+++ b/Source/core/html/forms/SearchInputType.cpp
@@ -81,7 +81,7 @@ void SearchInputType::createShadowSubtree()
 {
     TextFieldInputType::createShadowSubtree();
     Element* container = containerElement();
-    Element* viewPort = element().userAgentShadowRoot()->getElementById(ShadowElementNames::editingViewPort());
+    Element* viewPort = element().closedShadowRoot()->getElementById(ShadowElementNames::editingViewPort());
     ASSERT(container);
     ASSERT(viewPort);
 
@@ -157,7 +157,7 @@ void SearchInputType::updateView()
 
 void SearchInputType::updateCancelButtonVisibility()
 {
-    Element* button = element().userAgentShadowRoot()->getElementById(ShadowElementNames::clearButton());
+    Element* button = element().closedShadowRoot()->getElementById(ShadowElementNames::clearButton());
     if (!button)
         return;
     if (element().value().isEmpty()) {