Stop including main header twice in generated implementation code

Source/bindings/scripts/CodeGeneratorV8.pm

 # Copyright (C) 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
 # Copyright (C) 2006 Anders Carlsson <andersca@mac.com>
 # Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 # Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
 # Copyright (C) 2006 Apple Computer, Inc.
 # Copyright (C) 2007, 2008, 2009, 2012 Google Inc.
 # Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
 # Copyright (C) Research In Motion Limited 2010. All rights reserved.
 # Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
 # Copyright (C) 2012 Ericsson AB. All rights reserved.
@@ skipping 422 matching lines @@
         AddToImplIncludes(GetV8HeaderName(${type}));
 
         if ($type =~ /SVGPathSeg/) {
             my $joinedName = $type;
             $joinedName =~ s/Abs|Rel//;
             AddToImplIncludes("core/svg/${joinedName}.h");
         }
     }
 
     # additional includes (things needed to compile the bindings but not the header)
+    AddExtraIncludesForType($type);
+}
+
+sub AddExtraIncludesForType
+{
+    my $type = shift;
 
     if ($type eq "CanvasRenderingContext2D") {
         AddToImplIncludes("core/html/canvas/CanvasGradient.h");
         AddToImplIncludes("core/html/canvas/CanvasPattern.h");
         AddToImplIncludes("core/html/canvas/CanvasStyle.h");
     }
 
     if ($type eq "CanvasGradient" or $type eq "XPathNSResolver") {
         AddToImplIncludes("wtf/text/WTFString.h");
     }
@@ skipping 2854 matching lines @@
     my $vtableRefWin = GetWinVTableRefForInterface($interface);
 
     # - Add default header template
     push(@implContentHeader, GenerateImplementationContentHeader($interface));
 
     AddToImplIncludes("bindings/v8/V8Binding.h");
     AddToImplIncludes("bindings/v8/V8DOMWrapper.h");
     AddToImplIncludes("core/dom/ContextFeatures.h");
     AddToImplIncludes("RuntimeEnabledFeatures.h");
 
-    AddIncludesForType($interfaceName);
+    AddExtraIncludesForType($interfaceName);
 
     my $toActiveDOMObject = InheritsExtendedAttribute($interface, "ActiveDOMObject") ? "${v8InterfaceName}::toActiveDOMObject" : "0";
     my $toEventTarget = InheritsExtendedAttribute($interface, "EventTarget") ? "${v8InterfaceName}::toEventTarget" : "0";
     my $rootForGC = NeedsCustomOpaqueRootForGC($interface) ? "${v8InterfaceName}::opaqueRootForGC" : "0";
 
     # Find the super descriptor.
     my $parentClass = "";
     my $parentClassTemplate = "";
     foreach (@{$interface->parents}) {
         my $parent = $_;
@@ skipping 2357 matching lines @@
         if ($currentInterface->extendedAttributes->{$extendedAttribute}) {
             $found = 1;
         }
         return 1 if $found;
     }, 0);
 
     return $found;
 }
 
 1;