Remove unused, unimplemented and no-op methods from MIMETypeRegistry.

Source/core/platform/MIMETypeRegistry.h

Index: Source/core/platform/MIMETypeRegistry.h
diff --git a/Source/core/platform/MIMETypeRegistry.h b/Source/core/platform/MIMETypeRegistry.h
index e16fbadf57bb59023915f0f050769167103d894f..9062e26f6893a582d0a6caf5ed3926c7c4ce63c5 100644
--- a/Source/core/platform/MIMETypeRegistry.h
+++ b/Source/core/platform/MIMETypeRegistry.h
@@ -38,10 +38,7 @@ public:
     static String getMIMETypeForExtension(const String& extension);
     static String getWellKnownMIMETypeForExtension(const String& extension);
 
-    static Vector<String> getExtensionsForMIMEType(const String& type);
     static String getPreferredExtensionForMIMEType(const String& type);
-    static String getMediaMIMETypeForExtension(const String& extension);
-    static Vector<String> getMediaMIMETypesForExtension(const String& extension);
 
     static String getMIMETypeForPath(const String& path);
 
@@ -67,34 +64,10 @@ public:
     // 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 mime type is not suitable for being loaded as a text
-    // document in a frame. Only valid for mime types begining with "text/".
-    static bool isUnsupportedTextMIMEType(const String& mimeType);
-
     // Check to see if a mime type is a valid Java applet mime type
     static bool isJavaAppletMIMEType(const String& mimeType);
-
-    // Check to see if a mime type is a plugin implemented by the
-    // browser (e.g. a Qt Plugin).
-    static bool isApplicationPluginMIMEType(const String& mimeType);
-
-    // Check to see if a mime type is suitable for being shown inside a page.
-    // Returns true if any of isSupportedImageMIMEType(), isSupportedNonImageMIMEType(), isSupportedMediaMIMEType() returns true
-    // or if given mime type begins with "text/" and isUnsupportedTextMIMEType() returns false.
-    static bool canShowMIMEType(const String& mimeType);
-
-    static HashSet<String>& getSupportedImageMIMETypes();
-    static HashSet<String>& getSupportedImageResourceMIMETypes();
-    static HashSet<String>& getSupportedImageMIMETypesForEncoding();
-    static HashSet<String>& getSupportedNonImageMIMETypes();
-    static HashSet<String>& getSupportedMediaMIMETypes();
-    static HashSet<String>& getUnsupportedTextMIMETypes();
-
-    static String getNormalizedMIMEType(const String&);
 };
 
-const String& defaultMIMEType();
-
 } // namespace WebCore
 
 #endif // MIMETypeRegistry_h