Remove unused methods from SkWindow.

include/views/SkWindow.h

 /*
  * 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.
  */
 
 #ifndef SkWindow_DEFINED
 #define SkWindow_DEFINED
 
@@ skipping 16 matching lines @@
 
 class SkWindow : public SkView {
 public:
             SkWindow();
     virtual ~SkWindow();
 
     const SkBitmap& getBitmap() const { return fBitmap; }
 
     void    setConfig(SkBitmap::Config);
     void    resize(int width, int height, SkBitmap::Config config = SkBitmap::kNo_Config);
-    void    eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b);
-    void    eraseRGB(U8CPU r, U8CPU g, U8CPU b);
 
     bool    isDirty() const { return !fDirtyRgn.isEmpty(); }
     bool    update(SkIRect* updateArea);
     // does not call through to onHandleInval(), but does force the fDirtyRgn
     // to be wide open. Call before update() to ensure we redraw everything.
     void    forceInvalAll();
     // return the bounds of the dirty/inval rgn, or [0,0,0,0] if none
     const SkIRect& getDirtyBounds() const { return fDirtyRgn.getBounds(); }
 
     bool    handleClick(int x, int y, Click::State, void* owner, unsigned modi = 0);
@@ skipping 63 matching lines @@
     #include "SkOSWindow_Android.h"
 #elif defined(SK_BUILD_FOR_UNIX)
   #include "SkOSWindow_Unix.h"
 #elif defined(SK_BUILD_FOR_SDL)
     #include "SkOSWindow_SDL.h"
 #elif defined(SK_BUILD_FOR_IOS)
     #include "SkOSWindow_iOS.h"
 #endif
 
 #endif