Switch from PrintTo to operator<< for platform printers

third_party/WebKit/Source/platform/transforms/TransformationMatrix.h

 /*
  * Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 420 matching lines @@
 #if defined(TRANSFORMATION_MATRIX_USE_X86_64_SSE2)
         // m_matrix can cause this class to require higher than usual alignment.
         // Make sure the allocator handles this.
         ASSERT((reinterpret_cast<uintptr_t>(this) & (WTF_ALIGN_OF(TransformationMatrix) - 1)) == 0);
 #endif
     }
 
     Matrix4 m_matrix;
 };
 
-// Redeclared here to avoid ODR issues.
-// See platform/testing/TransformPrinters.h.
-void PrintTo(const TransformationMatrix&, std::ostream*);
+PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const TransformationMatrix&);
 
 } // namespace blink
 
 #endif // TransformationMatrix_h