The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b1536fd7e1fa4dd7559e2c12e290e79cf949e9fe

commit b1536fd7e1fa4dd7559e2c12e290e79cf949e9fe
Author: bashi <bashi@chromium.org>
Date: Tue Dec 20 04:49:30 2016

Disable suspending renderer when memory coordinator is enabled

Just calling SuspendRenderer() in OnMemoryStateChange() breaks
many things. We need a reliable and consistent way to suspend
renderers. Until we come up with a solution, disable renderer
suspending when memory coordinator is enabled. In follow-up
CLs I'll add some tests to prevent this kind of regressions.

BUG= 675735 , 675811 

Review-Url: https://codereview.chromium.org/2590073002
Cr-Commit-Position: refs/heads/master@{#439708}

[modify] https://crrev.com/b1536fd7e1fa4dd7559e2c12e290e79cf949e9fe/content/renderer/render_thread_impl.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d37e4c892eed8e2ad96de67f347254b846531ede

commit d37e4c892eed8e2ad96de67f347254b846531ede
Author: bashi <bashi@chromium.org>
Date: Tue Dec 20 10:41:28 2016

Use MockRenderProcessHost in memory coordinator unittests

Calling RenderProcessHost::FromID() directly prevents us to write
unittests. Add a virtual method for getting RenderProcessHost so that
testing code can use MockRenderProcessHost to write unittests.

Also, this CL installs a MemoryCoordinatorDelegate in unittests so that
unittests can have wider coverage.

BUG= 675811 

Review-Url: https://codereview.chromium.org/2594513002
Cr-Commit-Position: refs/heads/master@{#439764}

[modify] https://crrev.com/d37e4c892eed8e2ad96de67f347254b846531ede/content/browser/memory/memory_coordinator_impl.cc
[modify] https://crrev.com/d37e4c892eed8e2ad96de67f347254b846531ede/content/browser/memory/memory_coordinator_impl.h
[modify] https://crrev.com/d37e4c892eed8e2ad96de67f347254b846531ede/content/browser/memory/memory_coordinator_impl_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ff1e6242e014db17e8bb736741595705c81dc774

commit ff1e6242e014db17e8bb736741595705c81dc774
Author: tasak <tasak@google.com>
Date: Thu Dec 22 04:53:55 2016

Disable PurgeAndSuspend when MemoryCoordinator is enabled.

PurgeAndSuspend depends on OnMemoryStateChange(). However,
always suspending renderer in OnMemoryStateChange(), it breaks
many things. So only enabling such suspend / resume feature when
only PurgeAndSuspend is enabled.

BUG= 675735 ,  675811 

Review-Url: https://codereview.chromium.org/2595813002
Cr-Commit-Position: refs/heads/master@{#440340}

[modify] https://crrev.com/ff1e6242e014db17e8bb736741595705c81dc774/content/renderer/render_thread_impl.cc

Let me close this as we don't intend to suspend at this point.