Move SkReadBuffer.h and SkReader32.h out of include.

gyp/public_headers.gypi

 # Include this gypi to include all public header files that exist in the
 # include directory.
 #
 # The list is computed by running 'find include -name *.h' in the root dir of
 # the project.
 #
 {
   'variables': {
     'header_filenames': [
       'animator/SkAnimator.h',
@@ skipping 55 matching lines @@
       'core/SkPath.h',
       'core/SkPathEffect.h',
       'core/SkPathMeasure.h',
       'core/SkPicture.h',
       'core/SkPixelRef.h',
       'core/SkPoint.h',
       'core/SkPostConfig.h',
       'core/SkPreConfig.h',
       'core/SkRRect.h',
       'core/SkRasterizer.h',
-      'core/SkReader32.h',
       'core/SkRect.h',
       'core/SkRefCnt.h',
       'core/SkRegion.h',
       'core/SkScalar.h',
       'core/SkShader.h',
       'core/SkSize.h',
       'core/SkStream.h',
       'core/SkString.h',
       'core/SkStringUtils.h',
       'core/SkStrokeRec.h',
@@ skipping 182 matching lines @@
       'views/unix/keysym2ucs.h',
       'xml/SkBML_WXMLParser.h',
       'xml/SkBML_XMLParser.h',
       'xml/SkDOM.h',
       'xml/SkJS.h',
       'xml/SkXMLParser.h',
       'xml/SkXMLWriter.h',
     ],
   },
 }