Move WebUSB from OriginTrialEnabled to RuntimeEnabled.

Move WebUSB from OriginTrialEnabled to RuntimeEnabled.

This reverses commit 5c00cb62536b679d52c3741598d3f08f79e7e32f.

BUG=605326, 492204
TEST=To verify:

On Windows, Chrome OS, Mac OSX:

Check the following with chrome launched without command line flags:

For each site:
 https://permission.site
 http://permission.site
Load and press the USB button.
 Expect in Chrome Developer Tools: Console output:
  "Uncaught TypeError: Cannot read property 'requestDevice' of undefined"

Check the following with chrome launched with command line flag:
 --enable-blink-features=ExperimentalFramework

For https://permission.site
Load and press the USB button.
 Expect a chooser dialog to open.

For http://permission.site
Load and press the USB button.
 Expect in Chrome Developer Tools: Console output:
  "error usb DOMException: Only secure origins are allowed (see: https://goo.gl/Y0ZkNV)."

Review-Url: https://codereview.chromium.org/1917103004
Cr-Commit-Position: refs/heads/master@{#391090}
(cherry picked from commit 403af928b91df81acac1fc3b27fc093f2eb6da24)

Committed: https://chromium.googlesource.com/chromium/src/+/499429ab56d93c5e90c338fdb6d42e9987b3e508

[scheib, 2016-05-09 19:14:53]

Description was changed from

==========
Move WebUSB from OriginTrialEnabled to RuntimeEnabled.

This reverses commit 5c00cb62536b679d52c3741598d3f08f79e7e32f.

BUG=605326, 492204

TEST=To verify:

On Windows, Chrome OS, Mac OSX:

Check the following with chrome launched without command line flags:

For each site:
 https://permission.site
 http://permission.site
Load and press the USB button.
 Expect in Chrome Developer Tools: Console output:
  "Uncaught TypeError: Cannot read property 'requestDevice' of undefined"

Check the following with chrome launched with command line flag:
 --enable-blink-features=ExperimentalFramework

For https://permission.site
Load and press the USB button.
 Expect a chooser dialog to open.

For http://permission.site
Load and press the USB button.
 Expect in Chrome Developer Tools: Console output:
  "error usb DOMException: Only secure origins are allowed (see:
https://goo.gl/Y0ZkNV)."

Review-Url: https://codereview.chromium.org/1917103004
Cr-Commit-Position: refs/heads/master@{#391090}
(cherry picked from commit 403af928b91df81acac1fc3b27fc093f2eb6da24)
==========

to

==========
Move WebUSB from OriginTrialEnabled to RuntimeEnabled.

This reverses commit 5c00cb62536b679d52c3741598d3f08f79e7e32f.

BUG=605326, 492204

TEST=To verify:

On Windows, Chrome OS, Mac OSX:

Check the following with chrome launched without command line flags:

For each site:
 https://permission.site
 http://permission.site
Load and press the USB button.
 Expect in Chrome Developer Tools: Console output:
  "Uncaught TypeError: Cannot read property 'requestDevice' of undefined"

Check the following with chrome launched with command line flag:
 --enable-blink-features=ExperimentalFramework

For https://permission.site
Load and press the USB button.
 Expect a chooser dialog to open.

For http://permission.site
Load and press the USB button.
 Expect in Chrome Developer Tools: Console output:
  "error usb DOMException: Only secure origins are allowed (see:
https://goo.gl/Y0ZkNV)."

Review-Url: https://codereview.chromium.org/1917103004
Cr-Commit-Position: refs/heads/master@{#391090}
(cherry picked from commit 403af928b91df81acac1fc3b27fc093f2eb6da24)

Committed:
https://chromium.googlesource.com/chromium/src/+/499429ab56d93c5e90c338fdb6d4...
==========

[scheib, 2016-05-09 19:14:55]

Committed patchset #1 (id:1) manually as
499429ab56d93c5e90c338fdb6d42e9987b3e508.