blink style: Update one class cluster, delete one class, change comment style.

third_party/WebKit/Source/platform/testing/PaintPrinters.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 "platform/testing/PaintPrinters.h"
 
 #include "platform/graphics/paint/PaintChunk.h"
 #include "platform/graphics/paint/PaintChunkProperties.h"
 #include <iomanip>  // NOLINT
 #include <ostream>  // NOLINT
 
-namespace {
-class StreamStateSaver : private std::ios {
-  WTF_MAKE_NONCOPYABLE(StreamStateSaver);
-
- public:
-  StreamStateSaver(std::ios& other) : std::ios(nullptr), m_other(other) {
-    copyfmt(other);
-  }
-  ~StreamStateSaver() { m_other.copyfmt(*this); }
-
- private:
-  std::ios& m_other;
-};
-}  // unnamed namespace
-
 namespace blink {
 
 void PrintTo(const PaintChunk& chunk, std::ostream* os) {
   *os << "PaintChunk(begin=" << chunk.begin_index << ", end=" << chunk.end_index
       << ", id=";
   if (!chunk.id) {
     *os << "null";
   } else {
     *os << "(" << &chunk.id->client << ", ";
 #ifndef NDEBUG
@@ skipping 62 matching lines @@
 
 void PrintTo(const EffectPaintPropertyNode& node, std::ostream* os) {
   *os << "EffectPaintPropertyNode(" << node.ToString().Ascii().data() << ")";
 }
 
 void PrintTo(const ScrollPaintPropertyNode& node, std::ostream* os) {
   *os << "ScrollPaintPropertyNode(" << node.ToString().Ascii().data() << ")";
 }
 
 }  // namespace blink