Eliminate SkFILE - it always is the same as FILE.

include/core/SkData.h

Index: include/core/SkData.h
diff --git a/include/core/SkData.h b/include/core/SkData.h
index 28bf515347c2b302b7d08488cb99bac800e25a09..60a98e00f0049c8e0d08678a21b7418f77d8c22a 100644
--- a/include/core/SkData.h
+++ b/include/core/SkData.h
@@ -8,9 +8,10 @@
 #ifndef SkData_DEFINED
 #define SkData_DEFINED
 
+#include <stdio.h>
+
 #include "SkRefCnt.h"
 
-struct SkFILE;
 class SkStream;
 
 /**
@@ -119,13 +120,13 @@ public:
     static SkData* NewFromFileName(const char path[]);
 
     /**
-     *  Create a new dataref from a SkFILE.
-     *  This does not take ownership of the SkFILE, nor close it.
-     *  The caller is free to close the SkFILE at its convenience.
-     *  The SkFILE must be open for reading only.
+     *  Create a new dataref from a stdio FILE.
+     *  This does not take ownership of the FILE, nor close it.
+     *  The caller is free to close the FILE at its convenience.
+     *  The FILE must be open for reading only.
      *  Returns NULL on failure.
      */
-    static SkData* NewFromFILE(SkFILE* f);
+    static SkData* NewFromFILE(FILE* f);
 
     /**
      *  Create a new dataref from a file descriptor.