tools/android/loading: rename tracing to tracing_track

tools/android/loading/sandwich_metrics.py

 # Copyright 2016 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.
 
 """Pull a sandwich run's output directory's metrics from traces into a CSV.
 
 python pull_sandwich_metrics.py -h
 """
 
 import collections
@@ skipping 12 matching lines @@
 from chrome_telemetry_build import chromium_config
 
 sys.path.append(chromium_config.GetTelemetryDir())
 from telemetry.internal.image_processing import video
 from telemetry.util import image_util
 from telemetry.util import rgba_color
 
 import common_util
 import loading_trace as loading_trace_module
 import sandwich_runner
-import tracing
+import tracing_track
 
 
 COMMON_CSV_COLUMN_NAMES = [
     'chromium_commit',
     'platform',
     'first_layout',
     'first_contentful_paint',
     'first_meaningful_paint',
     'total_load',
     'js_onload_event',
@@ skipping 19 matching lines @@
 # Points of a completeness record.
 #
 # Members:
 #   |time| is in milliseconds,
 #   |frame_completeness| value representing how complete the frame is at a given
 #     |time|. Caution: this completeness might be negative.
 CompletenessPoint = collections.namedtuple('CompletenessPoint',
     ('time', 'frame_completeness'))
 
 
-def _GetBrowserPID(tracing_track):
+def _GetBrowserPID(track):
   """Get the browser PID from a trace.
 
   Args:
-    tracing_track: The tracing.TracingTrack.
+    track: The tracing_track.TracingTrack.
 
   Returns:
     The browser's PID as an integer.
   """
-  for event in tracing_track.GetEvents():
+  for event in track.GetEvents():
     if event.category != '__metadata' or event.name != 'process_name':
       continue
     if event.args['name'] == 'Browser':
       return event.pid
   raise ValueError('couldn\'t find browser\'s PID')
 
 
-def _GetBrowserDumpEvents(tracing_track):
+def _GetBrowserDumpEvents(track):
   """Get the browser memory dump events from a tracing track.
 
   Args:
-    tracing_track: The tracing.TracingTrack.
+    track: The tracing_track.TracingTrack.
 
   Returns:
     List of memory dump events.
   """
-  assert sandwich_runner.MEMORY_DUMP_CATEGORY in tracing_track.Categories()
-  browser_pid = _GetBrowserPID(tracing_track)
+  assert sandwich_runner.MEMORY_DUMP_CATEGORY in track.Categories()
+  browser_pid = _GetBrowserPID(track)
   browser_dumps_events = []
-  for event in tracing_track.GetEvents():
+  for event in track.GetEvents():
     if event.category != 'disabled-by-default-memory-infra':
       continue
     if event.type != 'v' or event.name != 'periodic_interval':
       continue
     # Ignore dump events for processes other than the browser process
     if event.pid != browser_pid:
       continue
     browser_dumps_events.append(event)
   if len(browser_dumps_events) == 0:
     raise ValueError('No browser dump events found.')
   return browser_dumps_events
 
 
-def _GetWebPageTrackedEvents(tracing_track):
+def _GetWebPageTrackedEvents(track):
   """Get the web page's tracked events from a tracing track.
 
   Args:
-    tracing_track: The tracing.TracingTrack.
+    track: The tracing_track.TracingTrack.
 
   Returns:
-    A dict mapping event.name -> tracing.Event for each first occurrence of a
-        tracked event.
+    A dict mapping event.name -> tracing_track.Event for each first occurrence
+        of a tracked event.
   """
   main_frame_id = None
   tracked_events = {}
-  sorted_events = sorted(tracing_track.GetEvents(),
+  sorted_events = sorted(track.GetEvents(),
                          key=lambda event: event.start_msec)
   for event in sorted_events:
     if event.category != 'blink.user_timing':
       continue
     event_name = event.name
 
     # Find the id of the main frame. Skip all events until it is found.
     if not main_frame_id:
       # Tracing (in Sandwich) is started after about:blank is fully loaded,
       # hence the first navigationStart in the trace registers the correct frame
@@ skipping 197 matching lines @@
     except video.BoundingBoxNotFoundException:
       # Sometimes the bounding box for the web content area is not present. Skip
       # calculating Speed Index.
       run_metrics['speed_index'] = _FAILED_CSV_VALUE
   else:
     run_metrics['speed_index'] = _UNAVAILABLE_CSV_VALUE
   for key, value in trace.metadata['network_emulation'].iteritems():
     run_metrics['net_emul.' + key] = value
   assert set(run_metrics.keys()) == set(COMMON_CSV_COLUMN_NAMES)
   return run_metrics