Add file access modes to sk_exists.

include/core/SkOSFile.h

 
 /*
  * 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.
  */
 
 
 // TODO: add unittests for all these operations
@@ skipping 59 matching lines @@
 void    sk_fmunmap(const void* addr, size_t length);
 
 /** Returns true if the two point at the exact same filesystem object. */
 bool    sk_fidentical(SkFILE* a, SkFILE* b);
 
 /** Returns the underlying file descriptor for the given file.
  *  The return value will be < 0 on failure.
  */
 int     sk_fileno(SkFILE* f);
 
-// Returns true if something (file, directory, ???) exists at this path.
-bool    sk_exists(const char *path);
+/** Returns true if something (file, directory, ???) exists at this path,
+ *  and has the specified access flags.
+ */
+bool    sk_exists(const char *path, SkFILE_Flags = (SkFILE_Flags)0);
 
 // Returns true if a directory exists at this path.
 bool    sk_isdir(const char *path);
 
 // Have we reached the end of the file?
 int sk_feof(SkFILE *);
 
 
 // Create a new directory at this path; returns true if successful.
 // If the directory already existed, this will return true.
@@ skipping 45 matching lines @@
      *  Return the name of the file, ignoring the directory structure.
      *  Behaves like python's os.path.basename. If the fullPath is
      *  /dir/subdir/, an empty string is returned.
      *  @param fullPath Full path to the file.
      *  @return SkString The basename of the file - anything beyond the
      *      final slash, or the full name if there is no slash.
      */
     static SkString SkBasename(const char* fullPath);
 };
 #endif