Revert of implement readPixels and writePixels natively, w/o using the (deprecated)

src/core/SkDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDevice.h"
 #include "SkMetaData.h"
 
+#if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
+    const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias = SkCanvas::kBGRA_Premul_Config8888;
+#elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A)
+    const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias = SkCanvas::kRGBA_Premul_Config8888;
+#else
+    const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias = (SkCanvas::Config8888) -1;
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+
 SkBaseDevice::SkBaseDevice()
     : fLeakyProperties(SkDeviceProperties::MakeDefault())
 #ifdef SK_DEBUG
     , fAttachedToCanvas(false)
 #endif
 {
     fOrigin.setZero();
     fMetaData = NULL;
 }
 
@@ skipping 199 matching lines @@
 }
 
 void SkBaseDevice::EXPERIMENTAL_optimize(SkPicture* picture) {
     // The base class doesn't perform any analysis but derived classes may
 }
 
 bool SkBaseDevice::EXPERIMENTAL_drawPicture(const SkPicture& picture) {
     // The base class doesn't perform any accelerated picture rendering
     return false;
 }