Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/layout/LayoutAnalyzer.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/LayoutAnalyzer.h"
 
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutText.h"
 #include "platform/TracedValue.h"
-#include <memory>
 
 namespace blink {
 
 LayoutAnalyzer::Scope::Scope(const LayoutObject& o)
     : m_layoutObject(o)
     , m_analyzer(o.frameView()->layoutAnalyzer())
 {
     if (m_analyzer)
         m_analyzer->push(o);
 }
@@ skipping 75 matching lines @@
     // stack recursion depth, not layout tree depth or DOM tree depth.
     m_counters[LayoutAnalyzerStackMaximumDepth] = max(m_counters[LayoutAnalyzerStackMaximumDepth], m_depth);
 }
 
 void LayoutAnalyzer::pop(const LayoutObject& o)
 {
     ASSERT(m_depth > 0);
     --m_depth;
 }
 
-std::unique_ptr<TracedValue> LayoutAnalyzer::toTracedValue()
+PassOwnPtr<TracedValue> LayoutAnalyzer::toTracedValue()
 {
-    std::unique_ptr<TracedValue> tracedValue(TracedValue::create());
+    OwnPtr<TracedValue> tracedValue(TracedValue::create());
     for (size_t i = 0; i < NumCounters; ++i) {
         if (m_counters[i] > 0)
             tracedValue->setInteger(nameForCounter(static_cast<Counter>(i)), m_counters[i]);
     }
     return tracedValue;
 }
 
 const char* LayoutAnalyzer::nameForCounter(Counter counter) const
 {
     switch (counter) {
@@ skipping 17 matching lines @@
     case CharactersInLayoutObjectsThatAreTextAndCanNotUseTheSimpleFontCodePath: return "CharactersInLayoutObjectsThatAreTextAndCanNotUseTheSimpleFontCodePath";
     case LayoutObjectsThatAreTextAndCanUseTheSimpleFontCodePath: return "LayoutObjectsThatAreTextAndCanUseTheSimpleFontCodePath";
     case CharactersInLayoutObjectsThatAreTextAndCanUseTheSimpleFontCodePath: return "CharactersInLayoutObjectsThatAreTextAndCanUseTheSimpleFontCodePath";
     case TotalLayoutObjectsThatWereLaidOut: return "TotalLayoutObjectsThatWereLaidOut";
     }
     ASSERT_NOT_REACHED();
     return "";
 }
 
 } // namespace blink