Fixes to make shared build work for app (chrome) target on linux.

skia/skia.gyp

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'includes': [
     '../build/common.gypi',
   ],
   'targets': [
     {
@@ skipping 553 matching lines @@
         'sgl/SkSpriteBlitterTemplate.h',
         'sgl/SkString.cpp',
         'sgl/SkStroke.cpp',
         'sgl/SkStrokerPriv.cpp',
         'sgl/SkStrokerPriv.h',
         'sgl/SkTemplatesPriv.h',
         'sgl/SkTSearch.cpp',
         'sgl/SkTSort.h',
         'sgl/SkTypeface.cpp',
         'sgl/SkTypeface_fake.cpp',
-        #'sgl/SkUnPreMultiply.cpp',
+        'sgl/SkUnPreMultiply.cpp',
         'sgl/SkUtils.cpp',
         'sgl/SkWriter32.cpp',
         'sgl/SkXfermode.cpp',
         #'svg/SkSVG.cpp',
         #'svg/SkSVGCircle.cpp',
         #'svg/SkSVGCircle.h',
         #'svg/SkSVGClipPath.cpp',
         #'svg/SkSVGClipPath.h',
         #'svg/SkSVGDefs.cpp',
         #'svg/SkSVGDefs.h',
@@ skipping 144 matching lines @@
       'direct_dependent_settings': {
         'include_dirs': [
           'include',
           'include/corecg',
           'ext',
         ],
       },
     },
   ],
 }