Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/fonts/GlyphPageTreeNode.h

Index: third_party/WebKit/Source/platform/fonts/GlyphPageTreeNode.h
diff --git a/third_party/WebKit/Source/platform/fonts/GlyphPageTreeNode.h b/third_party/WebKit/Source/platform/fonts/GlyphPageTreeNode.h
index 3954e366d20f5971c2025d916e349e4fd38bf2b3..5926e2b4eeadd02b83abd5c2e9e5059aa8115852 100644
--- a/third_party/WebKit/Source/platform/fonts/GlyphPageTreeNode.h
+++ b/third_party/WebKit/Source/platform/fonts/GlyphPageTreeNode.h
@@ -32,10 +32,11 @@
 #include "platform/fonts/GlyphPage.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashMap.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/Unicode.h"
-#include <memory>
 #include <string.h>
+
 #include <unicode/uscript.h>
 
 namespace blink {
@@ -133,9 +134,9 @@ private:
     static GlyphPageTreeNode* pageZeroRoot;
 
     RefPtr<GlyphPage> m_page;
-    typedef HashMap<const FontData*, std::unique_ptr<GlyphPageTreeNode>> GlyphPageTreeNodeMap;
+    typedef HashMap<const FontData*, OwnPtr<GlyphPageTreeNode>> GlyphPageTreeNodeMap;
     GlyphPageTreeNodeMap m_children;
-    std::unique_ptr<SystemFallbackGlyphPageTreeNode> m_systemFallbackChild;
+    OwnPtr<SystemFallbackGlyphPageTreeNode> m_systemFallbackChild;
 };
 
 class PLATFORM_EXPORT SystemFallbackGlyphPageTreeNode : public GlyphPageTreeNodeBase {