Moving away from shell api to support long path names on windows for filesystem.

base/file_path_unittest.cc

Index: base/file_path_unittest.cc
===================================================================
--- base/file_path_unittest.cc	(revision 68690)
+++ base/file_path_unittest.cc	(working copy)
@@ -1087,3 +1087,16 @@
   }
 }
 #endif
+
+#if defined(OS_WIN)
+TEST_F(FilePathTest, TestStartsWithExtendedPathPrefix) {
+  FilePath::StringType prefix_str(FilePath::kExtendedPathPrefix);
+  FilePath with_extended_path_prefix(prefix_str);
+  EXPECT_TRUE(with_extended_path_prefix.StartsWithExtendedPathPrefix());
+  FilePath longer_with_extended_path_prefix(
+      prefix_str.append(FPL("/\\foo\\/bar")));
+  EXPECT_TRUE(longer_with_extended_path_prefix.StartsWithExtendedPathPrefix());
+  FilePath without_extended_path_prefix(FPL("/\\foo\\/bar"));
+  EXPECT_FALSE(without_extended_path_prefix.StartsWithExtendedPathPrefix());
+}
+#endif