[Predator] Generate all changelogs in regression ranges instead of only matched changelogs

appengine/findit/crash/stacktrace.py

Index: appengine/findit/crash/stacktrace.py
diff --git a/appengine/findit/crash/stacktrace.py b/appengine/findit/crash/stacktrace.py
index d9cac810c24ef086bc17b4c1dd7cac973a9b7130..a221c15bc62ffcf4b652948091572ada011dcd0f 100644
--- a/appengine/findit/crash/stacktrace.py
+++ b/appengine/findit/crash/stacktrace.py
@@ -27,6 +27,20 @@ FRAME_INDEX_PATTERN = re.compile(r'\s*#(\d+)\s.*')
 _DEFAULT_FORMAT_TYPE = CallStackFormatType.DEFAULT
 
 
+# TODO(wrengr): it's not clear why the ``priority`` is stored at all,
+# given that every use in this file discards it. ``Result.file_to_stack_infos``
+# should just store pointers directly to the frames themselves rather
+# than needing this intermediate object.
+# TODO(http://crbug.com/644476): this class needs a better name.
+class StackInfo(namedtuple('StackInfo', ['frame', 'priority'])):
+  """Pair of a frame and the ``priority`` of the ``CallStack`` it came from."""
+  __slots__ = ()
+
+  def __str__(self): # pragma: no cover
+    return ('%s(frame = %s, priority = %f)'
+        % (self.__class__.__name__, self.frame, self.priority))
+
+
 class StackFrame(namedtuple('StackFrame',
     ['index', 'dep_path', 'function', 'file_path', 'raw_file_path',
      'crashed_line_numbers', 'repo_url'])):