change more effects to only expose factories

include/effects/SkColorFilterImageFilter.h

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkColorFilterImageFilter_DEFINED
 #define SkColorFilterImageFilter_DEFINED
 
 #include "SkImageFilter.h"
 
 class SkColorFilter;
 
 class SK_API SkColorFilterImageFilter : public SkImageFilter {
 public:
-    static SkColorFilterImageFilter* Create(SkColorFilter* cf,
-                                            SkImageFilter* input = NULL,
-                                            const CropRect* cropRect = NULL);
-    virtual ~SkColorFilterImageFilter();
+    static SkImageFilter* Create(SkColorFilter* cf, SkImageFilter* input = NULL,
+                                 const CropRect* cropRect = NULL);
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorFilterImageFilter)
 
 protected:
     void flatten(SkWriteBuffer&) const override;
-
-    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
-                               SkBitmap* result, SkIPoint* loc) const override;
-
+    bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, SkBitmap* result,
+                       SkIPoint* loc) const override;
     bool onIsColorFilterNode(SkColorFilter**) const override;
     bool affectsTransparentBlack() const override;
 
 private:
     SkColorFilterImageFilter(SkColorFilter* cf,
                              SkImageFilter* input,
                              const CropRect* cropRect);
+    virtual ~SkColorFilterImageFilter();
+
     SkColorFilter*  fColorFilter;
 
     typedef SkImageFilter INHERITED;
 };
 
 #endif