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..b5747d2e82c31072e0ed6be78914f613efa1c064 100644
--- a/public/platform/WebURLRequest.h
+++ b/public/platform/WebURLRequest.h
@@ -165,6 +165,11 @@ 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 WebURL requestorURL() const;

[jochen (gone - plz use gerrit), 2015/04/13 13:07:02]

does the full URL actually matter (i.e. do you need username/password, reference
fragment, and query string, or just the security origin)?

[Mike West, 2015/04/21 12:46:23]

Origin would be fine, now that you mention it. I'll make that change.

+    BLINK_PLATFORM_EXPORT void setRequestorURL(const WebURL&);
+
     // Controls whether user name, password, and cookies may be sent with the
     // request. (If false, this overrides allowCookies.)
     BLINK_PLATFORM_EXPORT bool allowStoredCredentials() const;