Added preloader support for sizes based RW values

Source/core/fetch/FetchRequest.cpp

Index: Source/core/fetch/FetchRequest.cpp
diff --git a/Source/core/fetch/FetchRequest.cpp b/Source/core/fetch/FetchRequest.cpp
index 8c0e84c609aa78841449303dbe607692ecfc30e2..5ed5593e99c7a85025b95691947afc5223eaef14 100644
--- a/Source/core/fetch/FetchRequest.cpp
+++ b/Source/core/fetch/FetchRequest.cpp
@@ -39,6 +39,7 @@ FetchRequest::FetchRequest(const ResourceRequest& resourceRequest, const AtomicS
     , m_forPreload(false)
     , m_defer(NoDefer)
     , m_originRestriction(UseDefaultOriginRestrictionForType)
+    , m_resourceWidth(-1)
 {
     m_options.initiatorInfo.name = initiator;
 }
@@ -50,6 +51,7 @@ FetchRequest::FetchRequest(const ResourceRequest& resourceRequest, const AtomicS
     , m_forPreload(false)
     , m_defer(NoDefer)
     , m_originRestriction(UseDefaultOriginRestrictionForType)
+    , m_resourceWidth(-1)
 {
     m_options.initiatorInfo.name = initiator;
 }
@@ -61,6 +63,7 @@ FetchRequest::FetchRequest(const ResourceRequest& resourceRequest, const FetchIn
     , m_forPreload(false)
     , m_defer(NoDefer)
     , m_originRestriction(UseDefaultOriginRestrictionForType)
+    , m_resourceWidth(-1)
 {
     m_options.initiatorInfo = initiator;
 }