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

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index 4c75a36363e428a3455ebef5b09246fc193e62fd..ac467550138fa291a957ebffe8cad2195ae691fa 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -7,6 +7,16 @@
 
 #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())