Add SVG as a picture supported mime type

Source/platform/MIMETypeRegistry.h

 /*
  * Copyright (C) 2006 Apple Computer, 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 30 matching lines @@
     static String getMIMETypeForPath(const String& path);
 
     // Check to see if a mime type is suitable for being loaded inline as an
     // image (e.g., <img> tags).
     static bool isSupportedImageMIMEType(const String& mimeType);
 
     // Check to see if a mime type is suitable for being loaded as an image
     // document in a frame.
     static bool isSupportedImageResourceMIMEType(const String& mimeType);
 
+    // Check to see if a mime type is a supported image format or an SVG.
+    static bool isSupportedImagePrefixedMIMEType(const String& mimeType);
+
     // Check to see if a mime type is suitable for being encoded.
     static bool isSupportedImageMIMETypeForEncoding(const String& mimeType);
 
     // Check to see if a mime type is suitable for being loaded as a JavaScript
     // resource.
     static bool isSupportedJavaScriptMIMEType(const String& mimeType);
 
     // Check to see if a non-image mime type is suitable for being loaded as a
     // document in a frame. Includes supported JavaScript MIME types.
     static bool isSupportedNonImageMIMEType(const String& mimeType);
 
     // Check to see if the mime type and codecs are supported by the MediaSource implementation.
     static bool isSupportedMediaSourceMIMEType(const String& mimeType, const String& codecs);
 
     // Check to see if the key system, mime type and codecs are supported by the Encrypted Media Extensions implementation.
     static bool isSupportedEncryptedMediaMIMEType(const String& keySystem, const String& mimeType, const String& codecs);
 
     // Check to see if a mime type is a valid Java applet mime type
     static bool isJavaAppletMIMEType(const String& mimeType);
 };
 
 } // namespace blink
 
 #endif // MIMETypeRegistry_h