Remove unused code from WebMimeRegistry.

third_party/WebKit/public/platform/WebMimeRegistry.h

 /*
  * Copyright (C) 2009 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 13 matching lines @@
  * 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.
  */
 
 #ifndef WebMimeRegistry_h
 #define WebMimeRegistry_h
 
-#include "WebCommon.h"
-
 namespace blink {
 
 class WebString;
 
 class WebMimeRegistry {
 public:
     enum SupportsType { IsNotSupported, IsSupported, MayBeSupported };
 
     virtual SupportsType supportsMIMEType(const WebString& mimeType) = 0;
     virtual SupportsType supportsImageMIMEType(const WebString& mimeType) = 0;
     virtual SupportsType supportsImagePrefixedMIMEType(const WebString& mimeType) = 0;
     virtual SupportsType supportsJavaScriptMIMEType(const WebString& mimeType) = 0;
     virtual SupportsType supportsMediaMIMEType(const WebString& mimeType, const WebString& codecs, const WebString& keySystem) = 0;
 
     virtual bool supportsMediaSourceMIMEType(const WebString& mimeType, const WebString& codecs) = 0;
 
     virtual SupportsType supportsNonImageMIMEType(const WebString& mimeType) = 0;
 
     virtual WebString mimeTypeForExtension(const WebString& fileExtension) = 0;
     virtual WebString wellKnownMimeTypeForExtension(const WebString& fileExtension) = 0;
-    virtual WebString mimeTypeFromFile(const WebString& filePath) = 0;
 
 protected:
     ~WebMimeRegistry() { }
 };
 
 } // namespace blink
 
 #endif