Revert of switch to isABitmap, deprecate SK_SUPPORT_LEGACY_SHADERBITMAPTYPE

src/core/SkBitmapProcShader.cpp

Index: src/core/SkBitmapProcShader.cpp
diff --git a/src/core/SkBitmapProcShader.cpp b/src/core/SkBitmapProcShader.cpp
index 97abbf96759ff7e7e9e029493791e99f718fcb71..c3b10184f4429981d69d18ce888b4af1bb61f609 100644
--- a/src/core/SkBitmapProcShader.cpp
+++ b/src/core/SkBitmapProcShader.cpp
@@ -27,7 +27,9 @@
     fTileModeY = (uint8_t)tmy;
 }
 
-bool SkBitmapProcShader::onIsABitmap(SkBitmap* texture, SkMatrix* texM, TileMode xy[]) const {
+SkShader::BitmapType SkBitmapProcShader::asABitmap(SkBitmap* texture,
+                                                   SkMatrix* texM,
+                                                   TileMode xy[]) const {
     if (texture) {
         *texture = fRawBitmap;
     }
@@ -38,7 +40,7 @@
         xy[0] = (TileMode)fTileModeX;
         xy[1] = (TileMode)fTileModeY;
     }
-    return true;
+    return kDefault_BitmapType;
 }
 
 SkFlattenable* SkBitmapProcShader::CreateProc(SkReadBuffer& buffer) {