Rewrite references to "wtf/" to "platform/wtf/" in the rest of platform/.

third_party/WebKit/Source/platform/image-encoders/JPEGImageEncoderTest.cpp

 // 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 "base/timer/elapsed_timer.h"
 #include "platform/image-encoders/RGBAtoRGB.h"
+#include "platform/wtf/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "wtf/build_config.h"
 
 namespace blink {
 
 class RGBAtoRGBTest : public ::testing::Test {
  public:
   RGBAtoRGBTest() {}
 };
 
 static const size_t kChannelsRGBA = 4;
 static const size_t kChannelsRGB = 3;
@@ skipping 208 matching lines @@
   cleanup();
   return result;
 }
 
 TEST_F(RGBAtoRGBTest, randomPixels) {
   EXPECT_TRUE(TestRandNpixels());
 }
 
 #endif
 }  // namespace blink