Revert "Remove OwnPtr from Blink."

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

Index: third_party/WebKit/Source/core/layout/LayoutAnalyzer.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutAnalyzer.cpp b/third_party/WebKit/Source/core/layout/LayoutAnalyzer.cpp
index 754a31c34dabd18faa292eceea06f61034e1dc70..1f5b74118775e6befceac8dfbeeb6b39c7565133 100644
--- a/third_party/WebKit/Source/core/layout/LayoutAnalyzer.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutAnalyzer.cpp
@@ -9,7 +9,6 @@
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutText.h"
 #include "platform/TracedValue.h"
-#include <memory>
 
 namespace blink {
 
@@ -105,9 +104,9 @@ void LayoutAnalyzer::pop(const LayoutObject& o)
     --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]);