Reland of SkOncePtr -> SkOnce

src/core/SkGlyphCache.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGlyphCache.h"
 #include "SkGlyphCache_Globals.h"
 #include "SkGraphics.h"
-#include "SkOncePtr.h"
+#include "SkOnce.h"
 #include "SkPath.h"
 #include "SkTemplates.h"
 #include "SkTraceMemoryDump.h"
 #include "SkTypeface.h"
 
 #include <cctype>
 
 //#define SPEW_PURGE_STATUS
 
 namespace {
 const char gGlyphCacheDumpName[] = "skia/sk_glyph_cache";
 }  // namespace
 
 // Returns the shared globals
-SK_DECLARE_STATIC_ONCE_PTR(SkGlyphCache_Globals, globals);
 static SkGlyphCache_Globals& get_globals() {
-    return *globals.get([]{ return new SkGlyphCache_Globals; });
+    static SkOnce once;
+    static SkGlyphCache_Globals* globals;
+
+    once([]{ globals = new SkGlyphCache_Globals; });
+    return *globals;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // so we don't grow our arrays a lot
 #define kMinGlyphCount      16
 #define kMinGlyphImageSize  (16*2)
 #define kMinAllocAmount     ((sizeof(SkGlyph) + kMinGlyphImageSize) * kMinGlyphCount)
 
 SkGlyphCache::SkGlyphCache(SkTypeface* typeface, const SkDescriptor* desc, SkScalerContext* ctx)
@@ skipping 775 matching lines @@
 }
 
 void SkGraphics::PurgeFontCache() {
     get_globals().purgeAll();
     SkTypefaceCache::PurgeAll();
 }
 
 // TODO(herb): clean up TLS apis.
 size_t SkGraphics::GetTLSFontCacheLimit() { return 0; }
 void SkGraphics::SetTLSFontCacheLimit(size_t bytes) { }