CORS-RFC1918: Introduce the 'addressSpace' IDL attributes.

third_party/WebKit/Source/core/dom/Document.idl

Index: third_party/WebKit/Source/core/dom/Document.idl
diff --git a/third_party/WebKit/Source/core/dom/Document.idl b/third_party/WebKit/Source/core/dom/Document.idl
index ceec172c6788fd93245eaf66472d458b5d728cab..0f309aadd9b3d9735858ecd95f28bf3961a02e47 100644
--- a/third_party/WebKit/Source/core/dom/Document.idl
+++ b/third_party/WebKit/Source/core/dom/Document.idl
@@ -26,6 +26,9 @@ enum DocumentReadyState { "loading", "interactive", "complete" };
 // http://www.w3.org/TR/page-visibility/#VisibilityState
 enum VisibilityState { "hidden", "visible", "prerender", "unloaded" };
 
+// https://mikewest.github.io/cors-rfc1918/#feature-detect
+enum AddressSpace { "local", "private", "public" };
+
 // https://dom.spec.whatwg.org/#interface-document
 
 // FIXME: Document should have a constructor. crbug.com/238234
@@ -194,6 +197,10 @@ interface Document : Node {
     readonly attribute boolean hidden;
     readonly attribute VisibilityState visibilityState;
 
+    // CORS and RFC1918
+    // https://mikewest.github.io/cors-rfc1918/#feature-detect
+    [RuntimeEnabled=CorsRFC1918, ImplementedAs=addressSpaceForBindings] readonly attribute AddressSpace addressSpace;
+
     // Non-standard APIs
     [MeasureAs=DocumentCaretRangeFromPoint] Range caretRangeFromPoint([Default=Undefined] optional long x, [Default=Undefined] optional long y);