make SkXfermode.h go away

This is step one:
- make SkXfermode useless to public clients
- everything they should need is in SkBlendMode.h

Step two:
- remove SkXfermode.h entirely (since skia core will already be using SkXfermodePriv.h)

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4534

Change-Id: If2cea9f71df92430ed6644edb98dd306c5572cbc
Reviewed-on: https://skia-review.googlesource.com/4534
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/core/SkXfermode.cpp b/src/core/SkXfermode.cpp
index 64ce04d851..3f3927e742 100644
--- a/src/core/SkXfermode.cpp
+++ b/src/core/SkXfermode.cpp
@@ -1280,6 +1280,10 @@ const char* SkXfermode::ModeName(Mode mode) {
     static_assert(SK_ARRAY_COUNT(gModeStrings) == kLastMode + 1, "mode_count");
 }
 
+const char* SkBlendMode_Name(SkBlendMode mode) {
+    return SkXfermode::ModeName((SkXfermode::Mode)mode);
+}
+
 #ifndef SK_IGNORE_TO_STRING
 void SkProcCoeffXfermode::toString(SkString* str) const {
     str->append("SkProcCoeffXfermode: ");