Remove OwnPtr::release() calls in core/ (part 3).

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

Index: third_party/WebKit/Source/core/layout/LayoutObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.cpp b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
index d9fa59774a3cc478e23c739770049eea7b1ddcf1..d7a5137cfa70455a2003e11ae118239c48eafe53 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
@@ -1187,7 +1187,7 @@ static PassOwnPtr<TracedValue> jsonObjectForPaintInvalidationInfo(const LayoutRe
     OwnPtr<TracedValue> value = TracedValue::create();
     addJsonObjectForRect(value.get(), "rect", rect);
     value->setString("invalidation_reason", invalidationReason);
-    return value.release();
+    return value;
 }
 
 static void invalidatePaintRectangleOnWindow(const LayoutBoxModelObject& paintInvalidationContainer, const IntRect& dirtyRect)
@@ -1338,7 +1338,7 @@ static PassOwnPtr<TracedValue> jsonObjectForOldAndNewRects(const LayoutRect& old
     addJsonObjectForPoint(value.get(), "oldLocation", oldLocation);
     addJsonObjectForRect(value.get(), "newRect", newRect);
     addJsonObjectForPoint(value.get(), "newLocation", newLocation);
-    return value.release();
+    return value;
 }
 
 LayoutRect LayoutObject::selectionRectInViewCoordinates() const