Revert "change SkColorTable to be immutable"

src/core/SkProcSpriteBlitter.cpp

 
 /*
  * Copyright 2006 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.
  */
 
 
 #if 0   // experimental
@@ skipping 18 matching lines @@
             ctable = fSource.getColorTable()->lockColors();
 
         while (--height >= 0)
         {
             proc(dst, src, width, ctable);
             dst += dstRB;
             src += srcRB;
         }
 
         if fSource.getColorTable())
-            fSource.getColorTable()->unlockColors();
+            fSource.getColorTable()->unlockColors(false);
     }
 
 private:
     Proc    fProc;
     uint8_t fSrcShift, fDstShift;
 };
 
 #endif