Revert of Moving previews code from components/ to chrome/

Revert of Moving previews code from components/ to chrome/ (patchset #4 id:60001 of https://codereview.chromium.org/2739033005/ )

Reason for revert:
Builders this step failed on:
Linux Tests [17 since first detection]
 1 test failed:
LoadAndLaunchExtensionBrowserTest.LoadAndLaunchExtension

Since:
https://uberchromegw.corp.google.com/i/chromium.linux/builders/Linux%20Tests/builds/53070

Original issue's description:
> Moving previews code from components/ to chrome/
> 
> Allows support for looking in other components or chrome code to verify
> if a preview is enabled and check the previews version. The layering
> dynamic is that components such as d_r_p will depend on previews/ and
> not the other way around, so these methods should be moved to chrome/
> and relevant information should be injected.
> 
> BUG=700459
> 
> Review-Url: https://codereview.chromium.org/2739033005
> Cr-Commit-Position: refs/heads/master@{#456511}
> Committed: https://chromium.googlesource.com/chromium/src/+/e69df7ab2555ce8874972c419b13add8e0ec0c32

TBR=tbansal@chromium.org,ryansturm@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=700459
Review-Url: https://codereview.chromium.org/2748033002
Cr-Commit-Position: refs/heads/master@{#456640}
Committed: https://chromium.googlesource.com/chromium/src/+/079434a138a811058137ee9dfb289e6155101cb9

[yoichio, 2017-03-14 06:44:37]

The CQ bit was checked by yoichio@chromium.org

[yoichio, 2017-03-14 06:44:37]

Created Revert of Moving previews code from components/ to chrome/

[commit-bot: I haz the power, 2017-03-14 06:44:57]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-14 06:45:46]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489473877092980, "parent_rev":
"27c39dbef0b07b7cd62fb2476d0f0836115fe672", "commit_rev":
"079434a138a811058137ee9dfb289e6155101cb9"}

[commit-bot: I haz the power, 2017-03-14 06:46:56]

Description was changed from

==========
Revert of Moving previews code from components/ to chrome/ (patchset #4 id:60001
of https://codereview.chromium.org/2739033005/ )

Reason for revert:
Builders this step failed on:
Linux Tests [17 since first detection]
 1 test failed:
LoadAndLaunchExtensionBrowserTest.LoadAndLaunchExtension

Since:
https://uberchromegw.corp.google.com/i/chromium.linux/builders/Linux%20Tests/...

Original issue's description:
> Moving previews code from components/ to chrome/
> 
> Allows support for looking in other components or chrome code to verify
> if a preview is enabled and check the previews version. The layering
> dynamic is that components such as d_r_p will depend on previews/ and
> not the other way around, so these methods should be moved to chrome/
> and relevant information should be injected.
> 
> BUG=700459
> 
> Review-Url: https://codereview.chromium.org/2739033005
> Cr-Commit-Position: refs/heads/master@{#456511}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e69df7ab2555ce8874972c419b13...

TBR=tbansal@chromium.org,ryansturm@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=700459
==========

to

==========
Revert of Moving previews code from components/ to chrome/ (patchset #4 id:60001
of https://codereview.chromium.org/2739033005/ )

Reason for revert:
Builders this step failed on:
Linux Tests [17 since first detection]
 1 test failed:
LoadAndLaunchExtensionBrowserTest.LoadAndLaunchExtension

Since:
https://uberchromegw.corp.google.com/i/chromium.linux/builders/Linux%20Tests/...

Original issue's description:
> Moving previews code from components/ to chrome/
> 
> Allows support for looking in other components or chrome code to verify
> if a preview is enabled and check the previews version. The layering
> dynamic is that components such as d_r_p will depend on previews/ and
> not the other way around, so these methods should be moved to chrome/
> and relevant information should be injected.
> 
> BUG=700459
> 
> Review-Url: https://codereview.chromium.org/2739033005
> Cr-Commit-Position: refs/heads/master@{#456511}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e69df7ab2555ce8874972c419b13...

TBR=tbansal@chromium.org,ryansturm@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=700459

Review-Url: https://codereview.chromium.org/2748033002
Cr-Commit-Position: refs/heads/master@{#456640}
Committed:
https://chromium.googlesource.com/chromium/src/+/079434a138a811058137ee9dfb28...
==========

[commit-bot: I haz the power, 2017-03-14 06:46:56]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/079434a138a811058137ee9dfb28...