The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0e8dc0e5f7fbd16ed18ae659ba8c137bbd3823fb

commit 0e8dc0e5f7fbd16ed18ae659ba8c137bbd3823fb
Author: Eriko Kurimoto <elkurin@google.com>
Date: Mon Sep 10 06:12:30 2018

Use URL parameters for storing filter types"

Each types of log (speech, event ...) can be filtered from URL params.
To enable users to change URL easily, LogPage is now on tab, not panel.

Bug:  879042 
Test: None
Change-Id: I64b80f828707f60df23afab6f57c68135199c57c
Reviewed-on: https://chromium-review.googlesource.com/1195407
Commit-Queue: Eriko Kurimoto <elkurin@google.com>
Reviewed-by: David Tseng <dtseng@chromium.org>
Reviewed-by: Yuki Awano <yawano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589831}
[modify] https://crrev.com/0e8dc0e5f7fbd16ed18ae659ba8c137bbd3823fb/chrome/browser/resources/chromeos/chromevox/cvox2/background/command_handler.js
[modify] https://crrev.com/0e8dc0e5f7fbd16ed18ae659ba8c137bbd3823fb/chrome/browser/resources/chromeos/chromevox/cvox2/background/log.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/946da64c6b326adcfc12fbdb9c357db491d1e452

commit 946da64c6b326adcfc12fbdb9c357db491d1e452
Author: Eriko Kurimoto <elkurin@google.com>
Date: Wed Sep 26 02:58:03 2018

Fix the bug on ChromVox Log Page fails to filter logs.

LogStore.LogType is deprecated after this CL (dump ax tree).
https://chromium-review.googlesource.com/c/chromium/src/+/1187853

Merge error occured in using URL parameters CL below.
https://chromium-review.googlesource.com/c/chromium/src/+/1195407

Bug:  879042 
Test: None
Change-Id: I277466efeb4b45311206e9301e3b0016af18dbf7
Reviewed-on: https://chromium-review.googlesource.com/1242764
Reviewed-by: David Tseng <dtseng@chromium.org>
Commit-Queue: Eriko Kurimoto <elkurin@google.com>
Cr-Commit-Position: refs/heads/master@{#594200}
[modify] https://crrev.com/946da64c6b326adcfc12fbdb9c357db491d1e452/chrome/browser/resources/chromeos/chromevox/cvox2/background/log.js
[modify] https://crrev.com/946da64c6b326adcfc12fbdb9c357db491d1e452/chrome/browser/resources/chromeos/chromevox/cvox2/background/log_store.js