gpu: Remove some GpuProcessHost dependency from shader cache.

gpu: Remove some GpuProcessHost dependency from shader cache.

Install a callback in ShaderDiskCache from GpuProcessHost to run when
shader data is loaded from the cache. This removes one of the content
dependencies from the shader cache code.

A subsequent CL will remove the dependency on BrowserThread, and then
the shader cache code can move out of content so that it can be
shared with services/ui.

BUG=643746
Committed: https://crrev.com/25360f4fcff36a27834a5735fde5661f06bf668f
Cr-Commit-Position: refs/heads/master@{#429015}

[sadrul, 2016-11-01 05:05:03]

The CQ bit was checked by sadrul@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-01 05:05:10]

Dry run: 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, 2016-11-01 05:49:43]

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

[commit-bot: I haz the power, 2016-11-01 05:49:44]

Dry run: This issue passed the CQ dry run.

[sadrul, 2016-11-01 13:29:21]

sadrul@chromium.org changed reviewers:
+ piman@chromium.org

[piman, 2016-11-01 15:54:49]

lgtm

[sadrul, 2016-11-01 16:23:08]

The CQ bit was checked by sadrul@chromium.org

[commit-bot: I haz the power, 2016-11-01 16:23:38]

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, 2016-11-01 16:28:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-01 17:22:13]

Description was changed from

==========
gpu: Remove some GpuProcessHost dependency from shader cache.

Install a callback in ShaderDiskCache from GpuProcessHost to run when
shader data is loaded from the cache. This removes one of the content
dependencies from the shader cache code.

A subsequent CL will remove the dependency on BrowserThread, and then
the shader cache code can move out of content so that it can be
shared with services/ui.

BUG=643746
==========

to

==========
gpu: Remove some GpuProcessHost dependency from shader cache.

Install a callback in ShaderDiskCache from GpuProcessHost to run when
shader data is loaded from the cache. This removes one of the content
dependencies from the shader cache code.

A subsequent CL will remove the dependency on BrowserThread, and then
the shader cache code can move out of content so that it can be
shared with services/ui.

BUG=643746

Committed: https://crrev.com/25360f4fcff36a27834a5735fde5661f06bf668f
Cr-Commit-Position: refs/heads/master@{#429015}
==========

[commit-bot: I haz the power, 2016-11-01 17:22:14]

Patchset 1 (id:??) landed as
https://crrev.com/25360f4fcff36a27834a5735fde5661f06bf668f
Cr-Commit-Position: refs/heads/master@{#429015}