WebURLRequest: Track the requesting document's URL through navigations.

public/platform/WebURLRequest.h

Index: public/platform/WebURLRequest.h
diff --git a/public/platform/WebURLRequest.h b/public/platform/WebURLRequest.h
index aa692f9da6f2a9cd35c9623247186ea501c44527..86a7b1fe84acf49e1e1a49bb2fc2893e78ce1645 100644
--- a/public/platform/WebURLRequest.h
+++ b/public/platform/WebURLRequest.h
@@ -40,6 +40,7 @@ namespace blink {
 class ResourceRequest;
 class WebHTTPBody;
 class WebHTTPHeaderVisitor;
+class WebSecurityOrigin;
 class WebString;
 class WebURL;
 class WebURLRequestPrivate;
@@ -165,6 +166,11 @@ public:
     BLINK_PLATFORM_EXPORT WebURL firstPartyForCookies() const;
     BLINK_PLATFORM_EXPORT void setFirstPartyForCookies(const WebURL&);
 
+    // The origin of the execution context which originated the request. Used to
+    // implement First-Party-Only cookie restrictions.
+    BLINK_PLATFORM_EXPORT WebSecurityOrigin requestorOrigin() const;
+    BLINK_PLATFORM_EXPORT void setRequestorOrigin(const WebSecurityOrigin&);
+
     // Controls whether user name, password, and cookies may be sent with the
     // request. (If false, this overrides allowCookies.)
     BLINK_PLATFORM_EXPORT bool allowStoredCredentials() const;