Add event name to bare removeEventListener(listener) calls

Add event name to bare removeEventListener(listener) calls

This mistake was possible because removeEventListener's arguments are
all optional, and these calls would throw exceptions if the argument
were non-optional.

Since these code paths supposedly current work, removing the event
listeners cannot be critical, but do it anyway as was originally
intended.

BUG=353484
Committed: https://crrev.com/4a653108efe1d4e3560b48f44df2634ade6967d1
Cr-Commit-Position: refs/heads/master@{#360949}

[philipj_slow, 2015-11-20 10:03:15]

The CQ bit was checked by philipj@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2015-11-20 10:03:27]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1463763002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1463763002/1

[commit-bot: I haz the power, 2015-11-20 11:56:27]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-20 11:56:28]

Dry run: This issue passed the CQ dry run.

[philipj_slow, 2015-11-20 12:23:39]

philipj@opera.com changed reviewers:
+ ddorwin@chromium.org, dgozman@chromium.org, stevenjb@chromium.org

[philipj_slow, 2015-11-20 12:23:40]

PTAL, I'd like to land this before https://codereview.chromium.org/1461993002/ 

stevenjb@:chrome/browser/*
dgozman@: third_party/WebKit/Source/devtools/*
ddorwin@: third_party/WebKit/LayoutTests/* (since all but one are EME)

[stevenjb, 2015-11-20 16:57:25]

c/b/ui/webui owner lgtm

[dgozman, 2015-11-20 17:20:40]

devtools lgtm

[ddorwin, 2015-11-20 17:22:26]

third_party/WebKit/LayoutTests/ LGTM

[philipj_slow, 2015-11-20 21:51:25]

The CQ bit was checked by philipj@opera.com

[commit-bot: I haz the power, 2015-11-20 21:52:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1463763002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1463763002/1

[commit-bot: I haz the power, 2015-11-20 22:06:56]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-20 22:06:57]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[philipj_slow, 2015-11-20 23:23:04]

The CQ bit was checked by philipj@opera.com

[commit-bot: I haz the power, 2015-11-20 23:23:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1463763002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1463763002/1

[commit-bot: I haz the power, 2015-11-20 23:31:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-20 23:31:40]

Patchset 1 (id:??) landed as
https://crrev.com/4a653108efe1d4e3560b48f44df2634ade6967d1
Cr-Commit-Position: refs/heads/master@{#360949}