Port uses of SkLazyPtr to SkOncePtr.

src/core/SkXfermode.cpp

Index: src/core/SkXfermode.cpp
diff --git a/src/core/SkXfermode.cpp b/src/core/SkXfermode.cpp
index 18ab9b6a0a6347a45771673fddd32121a19ca0c6..8548fe8aaca251fcac622864270496a92516039d 100644
--- a/src/core/SkXfermode.cpp
+++ b/src/core/SkXfermode.cpp
@@ -9,8 +9,8 @@
 #include "SkXfermode.h"
 #include "SkXfermode_proccoeff.h"
 #include "SkColorPriv.h"
-#include "SkLazyPtr.h"
 #include "SkMathPriv.h"
+#include "SkOncePtr.h"
 #include "SkOpts.h"
 #include "SkReadBuffer.h"
 #include "SkString.h"
@@ -996,20 +996,7 @@ void SkProcCoeffXfermode::toString(SkString* str) const {
 #endif
 
 
-// Technically, can't be static and passed as a template parameter.  So we use anonymous namespace.
-namespace {
-SkXfermode* create_mode(int iMode) {
-    SkXfermode::Mode mode = (SkXfermode::Mode)iMode;
-
-    ProcCoeff rec = gProcCoeffs[mode];
-    if (auto xfermode = SkOpts::create_xfermode(rec, mode)) {
-        return xfermode;
-    }
-    return new SkProcCoeffXfermode(rec, mode);
-}
-}  // namespace
-
-SK_DECLARE_STATIC_LAZY_PTR_ARRAY(SkXfermode, cached, SkXfermode::kLastMode + 1, create_mode);
+SK_DECLARE_STATIC_ONCE_PTR(SkXfermode, cached[SkXfermode::kLastMode + 1]);
 
 SkXfermode* SkXfermode::Create(Mode mode) {
     SkASSERT(SK_ARRAY_COUNT(gProcCoeffs) == kModeCount);
@@ -1025,7 +1012,13 @@ SkXfermode* SkXfermode::Create(Mode mode) {
         return nullptr;
     }
 
-    return SkSafeRef(cached[mode]);
+    return SkSafeRef(cached[mode].get([=]{
+        ProcCoeff rec = gProcCoeffs[mode];
+        if (auto xfermode = SkOpts::create_xfermode(rec, mode)) {
+            return xfermode;
+        }
+        return (SkXfermode*) new SkProcCoeffXfermode(rec, mode);
+    }));
 }
 
 SkXfermodeProc SkXfermode::GetProc(Mode mode) {