Make classes and structures in core/dom fast-allocated.

Source/core/dom/IconURL.h

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * 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.
  */
 
 #ifndef IconURL_h
 #define IconURL_h
 
 #include "platform/geometry/IntSize.h"
 #include "platform/weborigin/KURL.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 enum IconType {
     InvalidIcon = 0,
     Favicon = 1,
     TouchIcon = 1 << 1,
     TouchPrecomposedIcon = 1 << 2,
 };
 
 struct IconURL {
+    ALLOW_ONLY_INLINE_ALLOCATION();
     IconType m_iconType;
     Vector<IntSize> m_sizes;
     String m_mimeType;
     KURL m_iconURL;
     bool m_isDefaultIcon;
 
     IconURL()
         : m_iconType(InvalidIcon)
         , m_isDefaultIcon(false)
     {
     }
 
     IconURL(const KURL& url, const Vector<IntSize>& sizes, const String& mimeType, IconType type)
         : m_iconType(type)
         , m_sizes(sizes)
         , m_mimeType(mimeType)
         , m_iconURL(url)
         , m_isDefaultIcon(false)
     {
     }
 
     static IconURL defaultFavicon(const KURL&);
 };
 
 bool operator==(const IconURL&, const IconURL&);
 
 }
 
 #endif // IconURL_h