Rewrite references to "wtf/" to "platform/wtf/" in core/layout.

third_party/WebKit/Source/core/layout/ng/ng_length_utils_test.cc

 // Copyright 2016 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 "core/layout/ng/ng_length_utils.h"
 
 #include "core/layout/ng/ng_box_fragment.h"
 #include "core/layout/ng/ng_constraint_space.h"
 #include "core/layout/ng/ng_constraint_space_builder.h"
 #include "core/layout/ng/ng_fragment_builder.h"
 #include "core/layout/ng/ng_physical_box_fragment.h"
 #include "core/style/ComputedStyle.h"
 #include "platform/CalculationValue.h"
 #include "platform/LayoutUnit.h"
 #include "platform/Length.h"
+#include "platform/wtf/RefPtr.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "wtf/RefPtr.h"
 
 namespace blink {
 namespace {
 
 class NGLengthUtilsTest : public ::testing::Test {
  protected:
   void SetUp() override { style_ = ComputedStyle::Create(); }
 
   static RefPtr<NGConstraintSpace> ConstructConstraintSpace(
       int inline_size,
@@ skipping 468 matching lines @@
   EXPECT_EQ(125, GetUsedColumnWidth(4, 100, 10, 530));
   EXPECT_EQ(4, GetUsedColumnCount(4, 100, 10, 530));
   EXPECT_EQ(100, GetUsedColumnWidth(6, 100, 10, 540));
   EXPECT_EQ(5, GetUsedColumnCount(6, 100, 10, 540));
   EXPECT_EQ(100, GetUsedColumnWidth(0, 100, 10, 540));
   EXPECT_EQ(5, GetUsedColumnCount(0, 100, 10, 540));
 }
 
 }  // namespace
 }  // namespace blink