Make CopyDirectory() not copy the read only bit on Windows.

base/file_util_posix.cc

Index: base/file_util_posix.cc
diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index 3f0ee0aef2efd54c583e3102e02e484cd9b9d505..ec1a22cf673fc0cae92268cf07b1fa597222c6d2 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -260,13 +260,10 @@ bool CopyDirectory(const FilePath& from_path,
   // Some old callers of CopyDirectory want it to support wildcards.
   // After some discussion, we decided to fix those callers.
   // Break loudly here if anyone tries to do this.
-  // TODO(evanm): remove this once we're sure it's ok.
   DCHECK(to_path.value().find('*') == std::string::npos);
   DCHECK(from_path.value().find('*') == std::string::npos);
 
-  char top_dir[PATH_MAX];
-  if (strlcpy(top_dir, from_path.value().c_str(),
-              arraysize(top_dir)) >= arraysize(top_dir)) {
+  if (from_path.value().size() >= PATH_MAX) {
     return false;
   }
 
@@ -286,10 +283,10 @@ bool CopyDirectory(const FilePath& from_path,
     return false;
   if (real_to_path.value().size() >= real_from_path.value().size() &&
       real_to_path.value().compare(0, real_from_path.value().size(),
-      real_from_path.value()) == 0)
+                                   real_from_path.value()) == 0) {
     return false;
+  }
 
-  bool success = true;
   int traverse_type = FileEnumerator::FILES | FileEnumerator::SHOW_SYM_LINKS;
   if (recursive)
     traverse_type |= FileEnumerator::DIRECTORIES;
@@ -302,7 +299,7 @@ bool CopyDirectory(const FilePath& from_path,
   if (stat(from_path.value().c_str(), &from_stat) < 0) {
     DLOG(ERROR) << "CopyDirectory() couldn't stat source directory: "
                 << from_path.value() << " errno = " << errno;
-    success = false;
+    return false;
   }
   struct stat to_path_stat;
   FilePath from_path_base = from_path;
@@ -315,8 +312,10 @@ bool CopyDirectory(const FilePath& from_path,
 
   // The Windows version of this function assumes that non-recursive calls
   // will always have a directory for from_path.
+  // TODO(maruel): This is not necessary anymore.
   DCHECK(recursive || S_ISDIR(from_stat.st_mode));
 
+  bool success = true;
   while (success && !current.empty()) {
     // current is the source path, including from_path, so append
     // the suffix after from_path to to_path to create the target_path.