Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/layout/line/RootInlineBox.h

Index: third_party/WebKit/Source/core/layout/line/RootInlineBox.h
diff --git a/third_party/WebKit/Source/core/layout/line/RootInlineBox.h b/third_party/WebKit/Source/core/layout/line/RootInlineBox.h
index 538b0def387de3d18e601e6905902db295a13714..09df02ade5aab5e418b0955e67972c86df89dddf 100644
--- a/third_party/WebKit/Source/core/layout/line/RootInlineBox.h
+++ b/third_party/WebKit/Source/core/layout/line/RootInlineBox.h
@@ -25,8 +25,6 @@
 #include "core/layout/api/SelectionState.h"
 #include "core/layout/line/InlineFlowBox.h"
 #include "platform/text/BidiContext.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
@@ -126,7 +124,7 @@ public:
         if (m_floats)
             m_floats->append(floatingBox);
         else
-            m_floats= wrapUnique(new Vector<LayoutBox*>(1, floatingBox));
+            m_floats= adoptPtr(new Vector<LayoutBox*>(1, floatingBox));
     }
 
     Vector<LayoutBox*>* floatsPtr() { ASSERT(!isDirty()); return m_floats.get(); }
@@ -184,7 +182,7 @@ private:
 
     // Floats hanging off the line are pushed into this vector during layout. It is only
     // good for as long as the line has not been marked dirty.
-    std::unique_ptr<Vector<LayoutBox*>> m_floats;
+    OwnPtr<Vector<LayoutBox*>> m_floats;
 
     LayoutUnit m_lineTop;
     LayoutUnit m_lineBottom;