Class/struct layout optimization for blink Resource related classes

third_party/WebKit/Source/platform/loader/fetch/Resource.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
@@ skipping 242 matching lines @@
     Platform::Current()->CacheMetadataInCacheStorage(
         GetResponse().Url(), GetResponse().ResponseTime(), nullptr, 0,
         WebSecurityOrigin(security_origin_),
         GetResponse().CacheStorageCacheName());
   }
 }
 
 Resource::Resource(const ResourceRequest& request,
                    Type type,
                    const ResourceLoaderOptions& options)
-    : load_finish_time_(0),
+    : preload_result_(kPreloadNotReferenced),
+      type_(type),
+      status_(ResourceStatus::kNotStarted),
+      load_finish_time_(0),
       identifier_(0),
+      preload_count_(0),
+      preload_discovery_time_(0.0),
       encoded_size_(0),
       encoded_size_memory_usage_(0),
       decoded_size_(0),
       overhead_size_(CalculateOverheadSize()),
-      preload_count_(0),
-      preload_discovery_time_(0.0),
       cache_identifier_(MemoryCache::DefaultCacheIdentifier()),
-      preload_result_(kPreloadNotReferenced),
-      type_(type),
-      status_(ResourceStatus::kNotStarted),
       needs_synchronous_cache_hit_(false),
       link_preload_(false),
       is_revalidating_(false),
       is_alive_(false),
       is_add_remove_client_prohibited_(false),
       integrity_disposition_(ResourceIntegrityDisposition::kNotChecked),
       options_(options),
       response_timestamp_(CurrentTime()),
       cancel_timer_(
           // We use MainThread() for main-thread cases to avoid syscall cost
@@ skipping 843 matching lines @@
     case Resource::kMedia:
     case Resource::kManifest:
     case Resource::kMock:
       return false;
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace blink