Support the non-native (RGBA/BGRA) swizzle

src/codec/SkWbmpCodec.cpp

Index: src/codec/SkWbmpCodec.cpp
diff --git a/src/codec/SkWbmpCodec.cpp b/src/codec/SkWbmpCodec.cpp
index 1e165b4e1d6e6f426e19a64e7bd744dd4baeea8a..527565f6ab4484152f78909583b60400cacfccff 100644
--- a/src/codec/SkWbmpCodec.cpp
+++ b/src/codec/SkWbmpCodec.cpp
@@ -32,7 +32,8 @@ static inline void setup_color_table(SkColorType colorType,
 
 static inline bool valid_color_type(SkColorType colorType, SkAlphaType alphaType) {
     switch (colorType) {
-        case kN32_SkColorType:
+        case kRGBA_8888_SkColorType:
+        case kBGRA_8888_SkColorType:
         case kIndex_8_SkColorType:
             return true;
         case kGray_8_SkColorType: