Add basic Referrer-Policy support for Documents

third_party/WebKit/Source/platform/network/HTTPParsers.cpp

 /*
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 15 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "platform/network/HTTPParsers.h"
 
 #include "platform/ParsingUtilities.h"
+#include "platform/weborigin/SecurityPolicy.h"
 #include "platform/weborigin/Suborigin.h"
 #include "wtf/DateMath.h"
 #include "wtf/MathExtras.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/CharacterNames.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/WTFString.h"
 
 using namespace WTF;
 
@@ skipping 695 matching lines @@
         Suborigin::SuboriginPolicyOptions option = getSuboriginPolicyOptionFromString(optionName);
         if (option == Suborigin::SuboriginPolicyOptions::None)
             messages.append("Ignoring unknown suborigin policy option " + optionName + ".");
         else
             suborigin->addPolicyOption(option);
     }
 
     return true;
 }
 
+// TODO(estark): add parse error messages like suborigins
+// has. https://crbug.com/621248
+ReferrerPolicy parseReferrerPolicyHeader(const String& header)
+{
+    Vector<String> headers;
+    header.split(',', true, headers);
+    ReferrerPolicy result = ReferrerPolicyDefault;
+    for (const auto& header : headers) {
+        ReferrerPolicy currentResult;
+        if (SecurityPolicy::referrerPolicyFromString(header, &currentResult)) {
+            result = currentResult;
+        }
+    }
+    return result;
+}
+
 } // namespace blink