Revert of Port most uses of SkOnce to SkLazyPtr. (https://codereview.chromium.org/304383005/)

Reason for revert:
linux x86-64 release segfault in src/ports/SkFontHost_fontconfig.cpp:107

http://108.170.220.120:10117/builders/Test-Ubuntu12-ShuttleA-GTX660-x86_64-Release/builds/905/steps/RunTests/logs/stdio

Original issue's description:
> Port most uses of SkOnce to SkLazyPtr.
>
> BUG=skia:
>
> Committed: http://code.google.com/p/skia/source/detail?r=15006
>
> Committed: http://code.google.com/p/skia/source/detail?r=15014

R=reed@google.com, mtklein@chromium.org
TBR=mtklein@chromium.org, reed@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/306063004

git-svn-id: http://skia.googlecode.com/svn/trunk/include@15015 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/core/SkPathRef.h b/core/SkPathRef.h
index 47a69b7..8802714 100644
--- a/core/SkPathRef.h
+++ b/core/SkPathRef.h
@@ -418,7 +418,7 @@
     /**
      * Called the first time someone calls CreateEmpty to actually create the singleton.
      */
-    static SkPathRef* CreateEmptyImpl();
+    static void CreateEmptyImpl(int/*unused*/);
 
     void setIsOval(bool isOval) { fIsOval = isOval; }
 
diff --git a/core/SkTypeface.h b/core/SkTypeface.h
index 0b1c1f2..0be97eb 100644
--- a/core/SkTypeface.h
+++ b/core/SkTypeface.h
@@ -339,8 +339,7 @@
                           uint32_t glyphIDsCount = 0) const;
 
 private:
-    static SkTypeface* CreateDefault(int style);  // SkLazyPtr requires an int, not a Style.
-    static void        DeleteDefault(SkTypeface*);
+    static void create_default_typeface(Style style);
 
     SkFontID    fUniqueID;
     Style       fStyle;
diff --git a/ports/SkFontMgr.h b/ports/SkFontMgr.h
index bb8c7b7..a2fad9a 100644
--- a/ports/SkFontMgr.h
+++ b/ports/SkFontMgr.h
@@ -131,7 +131,7 @@
                                                unsigned styleBits) const = 0;
 private:
     static SkFontMgr* Factory();    // implemented by porting layer
-    static SkFontMgr* CreateDefault();
+    friend void set_up_default(SkFontMgr** singleton);
 
     typedef SkRefCnt INHERITED;
 };
diff --git a/ports/SkFontMgr_indirect.h b/ports/SkFontMgr_indirect.h
index b9ce344..6d497ee 100644
--- a/ports/SkFontMgr_indirect.h
+++ b/ports/SkFontMgr_indirect.h
@@ -11,6 +11,7 @@
 #include "SkDataTable.h"
 #include "SkFontMgr.h"
 #include "SkFontStyle.h"
+#include "SkOnce.h"
 #include "SkRemotableFontMgr.h"
 #include "SkTArray.h"
 #include "SkTypeface.h"
diff --git a/ports/SkRemotableFontMgr.h b/ports/SkRemotableFontMgr.h
index bd99497..68b4462 100644
--- a/ports/SkRemotableFontMgr.h
+++ b/ports/SkRemotableFontMgr.h
@@ -46,7 +46,7 @@
 
 private:
     SkRemotableFontIdentitySet() : fCount(0), fData() { }
-    static SkRemotableFontIdentitySet* NewEmptyImpl();
+    static void NewEmptyImpl(int);
 
     int fCount;
     SkAutoTMalloc<SkFontIdentity> fData;