Reland of Don't bother running realpath in DeviceUtils._GetChangedAndStaleFiles()

tools/android/md5sum/md5sum.cc

Index: tools/android/md5sum/md5sum.cc
diff --git a/tools/android/md5sum/md5sum.cc b/tools/android/md5sum/md5sum.cc
index 3db05ff18c908c5d1b997d768515cc0c3d4262d6..31f65f39523806ccdc7ba0a0f44db0df0da9d42b 100644
--- a/tools/android/md5sum/md5sum.cc
+++ b/tools/android/md5sum/md5sum.cc
@@ -56,7 +56,6 @@ std::set<std::string> MakeFileSet(const char** files) {
            (child = file_enumerator.Next()) != empty; ) {
         // If the path contains /.svn/, ignore it.
         if (child.value().find(svn_dir_component) == std::string::npos) {
-          child = base::MakeAbsoluteFilePath(child);
           file_set.insert(child.value());
         }
       }
@@ -82,9 +81,7 @@ int main(int argc, const char* argv[]) {
     if (!MD5Sum(it->c_str(), &digest)) {
       failed = true;
     } else {
-      base::FilePath file_path(*it);
-      std::cout << digest << "  "
-                << base::MakeAbsoluteFilePath(file_path).value() << std::endl;
+      std::cout << digest << "  " << *it << std::endl;
     }
   }
   return failed;