replace SkBitmap::Config with SkColorType in gms

gm/bitmappremul.cpp

Index: gm/bitmappremul.cpp
diff --git a/gm/bitmappremul.cpp b/gm/bitmappremul.cpp
index 57d22d700a7c83b2415cca2c858ac83732b82ede..fd563eb7757367320bcce284d416e1d2e4acbcf9 100644
--- a/gm/bitmappremul.cpp
+++ b/gm/bitmappremul.cpp
@@ -22,14 +22,15 @@ static const int SLIDE_SIZE = 256;
 static const int PIXEL_SIZE_8888 = SLIDE_SIZE / 256;
 static const int PIXEL_SIZE_4444 = SLIDE_SIZE / 16;
 
-static void init_bitmap(SkBitmap::Config config, SkBitmap* bitmap) {
-    bitmap->allocConfigPixels(config, SLIDE_SIZE, SLIDE_SIZE);
+static void init_bitmap(SkColorType ct, SkBitmap* bitmap) {
+    bitmap->allocPixels(SkImageInfo::Make(SLIDE_SIZE, SLIDE_SIZE, ct,
+                                          kPremul_SkAlphaType));
     bitmap->eraseColor(SK_ColorWHITE);
 }
 
 static SkBitmap make_argb8888_gradient() {
     SkBitmap bitmap;
-    init_bitmap(SkBitmap::kARGB_8888_Config, &bitmap);
+    init_bitmap(kPMColor_SkColorType, &bitmap);
     uint8_t rowColor = 0;
     for (int y = 0; y < SLIDE_SIZE; y++) {
         uint32_t* dst = bitmap.getAddr32(0, y);
@@ -46,7 +47,7 @@ static SkBitmap make_argb8888_gradient() {
 
 static SkBitmap make_argb4444_gradient() {
     SkBitmap bitmap;
-    init_bitmap(SkBitmap::kARGB_4444_Config, &bitmap);
+    init_bitmap(kARGB_4444_SkColorType, &bitmap);
     uint8_t rowColor = 0;
     for (int y = 0; y < SLIDE_SIZE; y++) {
         uint16_t* dst = bitmap.getAddr16(0, y);
@@ -63,7 +64,7 @@ static SkBitmap make_argb4444_gradient() {
 
 static SkBitmap make_argb8888_stripes() {
     SkBitmap bitmap;
-    init_bitmap(SkBitmap::kARGB_8888_Config, &bitmap);
+    init_bitmap(kPMColor_SkColorType, &bitmap);
     uint8_t rowColor = 0;
     for (int y = 0; y < SLIDE_SIZE; y++) {
         uint32_t* dst = bitmap.getAddr32(0, y);
@@ -82,7 +83,7 @@ static SkBitmap make_argb8888_stripes() {
 
 static SkBitmap make_argb4444_stripes() {
     SkBitmap bitmap;
-    init_bitmap(SkBitmap::kARGB_4444_Config, &bitmap);
+    init_bitmap(kARGB_4444_SkColorType, &bitmap);
     uint8_t rowColor = 0;;
     for (int y = 0; y < SLIDE_SIZE; y++) {
         uint16_t* dst = bitmap.getAddr16(0, y);