[oilpan] Completely move HTMLFormControlElement's hierarchy to the managed heap

Source/core/html/SearchInputType.cpp

Index: Source/core/html/SearchInputType.cpp
diff --git a/Source/core/html/SearchInputType.cpp b/Source/core/html/SearchInputType.cpp
index 18fc880cb0eb23320e6d658c3987a0c49204e9c0..46ddd6eb9adb5d60dc9adb3549adb8962085fd4c 100644
--- a/Source/core/html/SearchInputType.cpp
+++ b/Source/core/html/SearchInputType.cpp
@@ -44,7 +44,7 @@ namespace WebCore {
 
 using namespace HTMLNames;
 
-inline SearchInputType::SearchInputType(HTMLInputElement* element)
+inline SearchInputType::SearchInputType(Handle<HTMLInputElement> element)
     : BaseTextInputType(element)
     , m_resultsButton(0)
     , m_cancelButton(0)
@@ -52,7 +52,7 @@ inline SearchInputType::SearchInputType(HTMLInputElement* element)
 {
 }
 
-PassOwnPtr<InputType> SearchInputType::create(HTMLInputElement* element)
+PassOwnPtr<InputType> SearchInputType::create(Handle<HTMLInputElement> element)
 {
     return adoptPtr(new SearchInputType(element));
 }
@@ -71,7 +71,7 @@ void SearchInputType::addSearchResult()
 
 RenderObject* SearchInputType::createRenderer(RenderArena* arena, RenderStyle*) const
 {
-    return new (arena) RenderSearchField(element());
+    return new (arena) RenderSearchField(Handle<HTMLInputElement>(element()).raw());
 }
 
 const AtomicString& SearchInputType::formControlType() const
@@ -133,7 +133,7 @@ void SearchInputType::handleKeydownEvent(KeyboardEvent* event)
 
     const String& key = event->keyIdentifier();
     if (key == "U+001B") {
-        RefPtr<HTMLInputElement> input = element();
+        Handle<HTMLInputElement> input = element();
         input->setValueForUser("");
         input->onSearch();
         event->setDefaultHandled();