Remove blink::Resource::Type::LinkPrefetch and replace it by a flag

third_party/WebKit/Source/core/fetch/Resource.cpp

Index: third_party/WebKit/Source/core/fetch/Resource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/Resource.cpp b/third_party/WebKit/Source/core/fetch/Resource.cpp
index 96c1129075a39e2484a4907b38b952ff3223b79b..f6b90a0df25964394224c326938a5da14c029844 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.cpp
+++ b/third_party/WebKit/Source/core/fetch/Resource.cpp
@@ -1071,8 +1071,6 @@ const char* Resource::resourceTypeToString(Type type, const FetchInitiatorInfo&
         return "SVG document";
     case Resource::XSLStyleSheet:
         return "XSL stylesheet";
-    case Resource::LinkPrefetch:
-        return "Link prefetch resource";
     case Resource::LinkPreload:
         return "Link preload resource";
     case Resource::TextTrack:
@@ -1095,6 +1093,9 @@ bool Resource::shouldBlockLoadEvent() const
 
 bool Resource::isLoadEventBlockingResourceType() const
 {
+    if (isPrefetch())
+        return false;
+
     switch (m_type) {
     case Resource::MainResource:
     case Resource::Image:
@@ -1106,7 +1107,6 @@ bool Resource::isLoadEventBlockingResourceType() const
     case Resource::ImportResource:
         return true;
     case Resource::Raw:
-    case Resource::LinkPrefetch:
     case Resource::LinkPreload:
     case Resource::TextTrack:
     case Resource::Media: