Remove OwnPtr from Blink.

third_party/WebKit/Source/wtf/FilePrintStream.cpp

Index: third_party/WebKit/Source/wtf/FilePrintStream.cpp
diff --git a/third_party/WebKit/Source/wtf/FilePrintStream.cpp b/third_party/WebKit/Source/wtf/FilePrintStream.cpp
index d248c8c7701ef7944f8ff5c9fcf616e1b1797bce..c967e8a85ea2abd7a794345c61820b83f19c65c6 100644
--- a/third_party/WebKit/Source/wtf/FilePrintStream.cpp
+++ b/third_party/WebKit/Source/wtf/FilePrintStream.cpp
@@ -25,6 +25,9 @@
 
 #include "wtf/FilePrintStream.h"
 
+#include "wtf/PtrUtil.h"
+#include <memory>
+
 namespace WTF {
 
 FilePrintStream::FilePrintStream(FILE* file, AdoptionMode adoptionMode)
@@ -40,13 +43,13 @@ FilePrintStream::~FilePrintStream()
     fclose(m_file);
 }
 
-PassOwnPtr<FilePrintStream> FilePrintStream::open(const char* filename, const char* mode)
+std::unique_ptr<FilePrintStream> FilePrintStream::open(const char* filename, const char* mode)
 {
     FILE* file = fopen(filename, mode);
     if (!file)
-        return PassOwnPtr<FilePrintStream>();
+        return std::unique_ptr<FilePrintStream>();
 
-    return adoptPtr(new FilePrintStream(file));
+    return wrapUnique(new FilePrintStream(file));
 }
 
 void FilePrintStream::vprintf(const char* format, va_list argList)