Blink class layout optimization to reduce memory usage

third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp

 /*
  * Copyright (C) 2012 Google 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 66 matching lines @@
   return decoder;
 }
 
 std::unique_ptr<DeferredImageDecoder> DeferredImageDecoder::CreateForTesting(
     std::unique_ptr<ImageDecoder> actual_decoder) {
   return WTF::WrapUnique(new DeferredImageDecoder(std::move(actual_decoder)));
 }
 
 DeferredImageDecoder::DeferredImageDecoder(
     std::unique_ptr<ImageDecoder> actual_decoder)
-    : all_data_received_(false),
-      actual_decoder_(std::move(actual_decoder)),
+    : actual_decoder_(std::move(actual_decoder)),
       repetition_count_(kCAnimationNone),
+      all_data_received_(false),
       can_yuv_decode_(false),
       has_hot_spot_(false) {}
 
 DeferredImageDecoder::~DeferredImageDecoder() {}
 
 String DeferredImageDecoder::FilenameExtension() const {
   return actual_decoder_ ? actual_decoder_->FilenameExtension()
                          : filename_extension_;
 }
 
@@ skipping 258 matching lines @@
 
 namespace WTF {
 template <>
 struct VectorTraits<blink::DeferredFrameData>
     : public SimpleClassVectorTraits<blink::DeferredFrameData> {
   STATIC_ONLY(VectorTraits);
   static const bool kCanInitializeWithMemset =
       false;  // Not all DeferredFrameData members initialize to 0.
 };
 }