Port most uses of SkOnce to SkLazyPtr.

src/ports/SkFontConfigInterface_direct.cpp

 /*
  * Copyright 2009 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /* migrated from chrome/src/skia/ext/SkFontHost_fontconfig_direct.cpp */
 
 #include <string>
 #include <unistd.h>
 #include <fcntl.h>
 
 #include <fontconfig/fontconfig.h>
 
 #include "SkBuffer.h"
 #include "SkFontConfigInterface.h"
-#include "SkOnce.h"
+#include "SkLazyPtr.h"
 #include "SkStream.h"
 
 size_t SkFontConfigInterface::FontIdentity::writeToMemory(void* addr) const {
     size_t size = sizeof(fID) + sizeof(fTTCIndex);
     size += sizeof(int32_t) + sizeof(int32_t) + sizeof(uint8_t); // weight, width, italic
     size += sizeof(int32_t) + fString.size();    // store length+data
     if (addr) {
         SkWBuffer buffer(addr, size);
 
         buffer.write32(fID);
@@ skipping 88 matching lines @@
     // new APIs
     virtual SkDataTable* getFamilyNames() SK_OVERRIDE;
     virtual bool matchFamilySet(const char inFamilyName[],
                                 SkString* outFamilyName,
                                 SkTArray<FontIdentity>*) SK_OVERRIDE;
 
 private:
     SkMutex mutex_;
 };
 
-static void create_singleton_direct_interface(SkFontConfigInterface** singleton) {
-    *singleton = new SkFontConfigInterfaceDirect;
-}
+namespace {
+SkFontConfigInterface* create_direct() { return SkNEW(SkFontConfigInterfaceDirect); }
+} // namespace
+
 SkFontConfigInterface* SkFontConfigInterface::GetSingletonDirectInterface() {
-    static SkFontConfigInterface* gDirect;
-    SK_DECLARE_STATIC_ONCE(once);
-    SkOnce(&once, create_singleton_direct_interface, &gDirect);
-    return gDirect;
+    SK_DECLARE_STATIC_LAZY_PTR(SkFontConfigInterface, direct, create_direct);
+    return direct.get();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // Returns the string from the pattern, or NULL
 static const char* get_name(FcPattern* pattern, const char field[],
                             int index = 0) {
     const char* name;
     if (FcPatternGetString(pattern, field, index,
                            (FcChar8**)&name) != FcResultMatch) {
@@ skipping 580 matching lines @@
                 *trimmedMatches.append() = match[i];
             }
         }
 
         SkFontStyleSet_FC* sset = SkNEW_ARGS(SkFontStyleSet_FC,
                                              (trimmedMatches.begin(),
                                               trimmedMatches.count()));
 #endif
     return false;
 }