Revert of Stop copying script contents for each RenderFrames.

Revert of Stop copying script contents for each RenderFrames. (patchset #4 id:60001 of https://codereview.chromium.org/2278003002/ )

Reason for revert:
Crashes renderer while destroying UserScriptSet via ChromeExtensionsRendererClient LazyInstance...

Original issue's description:
> Stop copying script contents for each RenderFrames.
> 
> Instead, after unpickling the script content, put them in a WebString
> on its first use (GetJsSources) in a frame. Reuse them for subsequent
> frames.
> 
> The cleanup is done when UserScriptSet releases its shared memory
> connection.
> 
> A completely naive test shows that on WSJ site, with ABPlus extension
> installed, this reduced (24025 * 11 + 14785 * 10) = 412125 char copies!
> 
> BUG=622464
> Test=No visible change is expected.
> 
> Committed: https://crrev.com/0f702e9e3ccd2f408b198d2b2255d363da0310b9
> Cr-Commit-Position: refs/heads/master@{#417018}

TBR=rdevlin.cronin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=622464, 645357

[lazyboy, 2016-09-09 07:55:34]

The CQ bit was checked by lazyboy@chromium.org

[lazyboy, 2016-09-09 07:55:35]

Created Revert of Stop copying script contents for each RenderFrames.

[commit-bot: I haz the power, 2016-09-09 07:55:53]

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

[lazyboy, 2016-09-09 07:56:20]

Description was changed from

==========
Revert of Stop copying script contents for each RenderFrames. (patchset #4
id:60001 of https://codereview.chromium.org/2278003002/ )

Reason for revert:
Crashes renderer while destroying UserScriptSet via
ChromeExtensionsRendererClient LazyInstance...

Original issue's description:
> Stop copying script contents for each RenderFrames.
> 
> Instead, after unpickling the script content, put them in a WebString
> on its first use (GetJsSources) in a frame. Reuse them for subsequent
> frames.
> 
> The cleanup is done when UserScriptSet releases its shared memory
> connection.
> 
> A completely naive test shows that on WSJ site, with ABPlus extension
> installed, this reduced (24025 * 11 + 14785 * 10) = 412125 char copies!
> 
> BUG=622464
> Test=No visible change is expected.
> 
> Committed: https://crrev.com/0f702e9e3ccd2f408b198d2b2255d363da0310b9
> Cr-Commit-Position: refs/heads/master@{#417018}

TBR=rdevlin.cronin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=622464
==========

to

==========
Revert of Stop copying script contents for each RenderFrames. (patchset #4
id:60001 of https://codereview.chromium.org/2278003002/ )

Reason for revert:
Crashes renderer while destroying UserScriptSet via
ChromeExtensionsRendererClient LazyInstance...

Original issue's description:
> Stop copying script contents for each RenderFrames.
> 
> Instead, after unpickling the script content, put them in a WebString
> on its first use (GetJsSources) in a frame. Reuse them for subsequent
> frames.
> 
> The cleanup is done when UserScriptSet releases its shared memory
> connection.
> 
> A completely naive test shows that on WSJ site, with ABPlus extension
> installed, this reduced (24025 * 11 + 14785 * 10) = 412125 char copies!
> 
> BUG=622464
> Test=No visible change is expected.
> 
> Committed: https://crrev.com/0f702e9e3ccd2f408b198d2b2255d363da0310b9
> Cr-Commit-Position: refs/heads/master@{#417018}

TBR=rdevlin.cronin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=622464, 645357
==========

[commit-bot: I haz the power, 2016-09-09 07:58:11]

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

[commit-bot: I haz the power, 2016-09-09 07:58:12]

Try jobs failed on following builders:
  ios-device on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device/builds...)
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)