Switch from PrintTo to operator<< for platform printers

third_party/WebKit/Source/platform/geometry/DoubleRect.h

 // 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.
 
 #ifndef DoubleRect_h
 #define DoubleRect_h
 
 #include "platform/geometry/DoublePoint.h"
 #include "platform/geometry/DoubleSize.h"
 #include "wtf/Allocator.h"
@@ skipping 57 matching lines @@
     DoubleSize m_size;
 };
 
 PLATFORM_EXPORT IntRect enclosingIntRect(const DoubleRect&);
 
 // Returns a valid IntRect contained within the given DoubleRect.
 PLATFORM_EXPORT IntRect enclosedIntRect(const DoubleRect&);
 
 PLATFORM_EXPORT IntRect roundedIntRect(const DoubleRect&);
 
-// Redeclared here to avoid ODR issues.
-// See platform/testing/GeometryPrinters.h.
-void PrintTo(const DoubleRect&, std::ostream*);
+PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const DoubleRect&);
 
 } // namespace blink
 
 #endif