Remove OwnPtr from Blink.

third_party/WebKit/Source/core/dom/Element.cpp

Index: third_party/WebKit/Source/core/dom/Element.cpp
diff --git a/third_party/WebKit/Source/core/dom/Element.cpp b/third_party/WebKit/Source/core/dom/Element.cpp
index ebaa903a39c876845428c9f71fc889bc35ced02e..9df5ca1bd5f2f524c1648e69b24b21abab7ba4a4 100644
--- a/third_party/WebKit/Source/core/dom/Element.cpp
+++ b/third_party/WebKit/Source/core/dom/Element.cpp
@@ -139,6 +139,7 @@
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/TextPosition.h"
+#include <memory>
 
 namespace blink {
 
@@ -1050,14 +1051,14 @@ ClientRect* Element::getBoundingClientRect()
 const AtomicString& Element::computedRole()
 {
     document().updateStyleAndLayoutIgnorePendingStylesheetsForNode(this);
-    OwnPtr<ScopedAXObjectCache> cache = ScopedAXObjectCache::create(document());
+    std::unique_ptr<ScopedAXObjectCache> cache = ScopedAXObjectCache::create(document());
     return cache->get()->computedRoleForNode(this);
 }
 
 String Element::computedName()
 {
     document().updateStyleAndLayoutIgnorePendingStylesheetsForNode(this);
-    OwnPtr<ScopedAXObjectCache> cache = ScopedAXObjectCache::create(document());
+    std::unique_ptr<ScopedAXObjectCache> cache = ScopedAXObjectCache::create(document());
     return cache->get()->computedNameForNode(this);
 }