InspectorTimeline improvements

tools/telemetry/telemetry/timeline_model.py

Index: tools/telemetry/telemetry/timeline_model.py
diff --git a/tools/telemetry/telemetry/timeline_model.py b/tools/telemetry/telemetry/timeline_model.py
new file mode 100644
index 0000000000000000000000000000000000000000..fe19a917a01e840d0510a0eb77ba77432904985a
--- /dev/null
+++ b/tools/telemetry/telemetry/timeline_model.py
@@ -0,0 +1,23 @@
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+class TimelineModel(object):
+  def __init__(self):
+    self._events = []
+    self._frozen = False
+
+  def AddEvent(self, event):
+    if self._frozen:
+      raise Exception("Cannot add events once recording is done")
+    self._events.extend(
+      event.GetAllChildrenRecursive(include_self=True))
+
+  def DidFinishRecording(self):
+    self._frozen = True
+
+  def GetAllEvents(self):
+    return self._events
+
+  def GetAllOfName(self, name):
+    return [e for e in self._events if e.name == name]