cc: fix pre-painting trigger for GPU rasterization

cc: fix pre-painting trigger for GPU rasterization

CUTOFF_ALLOW_NICE_TO_HAVE was only triggered for --force-gpu-rasterization.
This patch triggers it when the active or the pending tree uses GPU
rasterization. In case of a transition between CPU and GPU rasterization it
is preferrable to pre-paint less on the CPU rasterized tree (which may
checkerboard) than it is to pre-paint more on the GPU rasterized tree (which
may stall the browser compositor).

This patch depends on https://codereview.chromium.org/270823003/

R=enne@chromium.org, alokp@chromium.org
BUG=368884
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=269682

[ernstm, 2014-05-08 23:15:16]

PTAL

[alokp, 2014-05-08 23:22:47]

lgtm

[enne (OOO), 2014-05-09 20:10:28]

lgtm

[alokp, 2014-05-10 14:14:07]

The CQ bit was checked by alokp@chromium.org

[commit-bot: I haz the power, 2014-05-10 14:15:33]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ernstm@chromium.org/272033002/1

[commit-bot: I haz the power, 2014-05-10 16:12:47]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...)
  mac_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/mac_chromium_rel/buil...)
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)
  win_chromium_x64_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_x64_rel/...)

[commit-bot: I haz the power, 2014-05-10 16:47:58]

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

[commit-bot: I haz the power, 2014-05-10 16:47:58]

Try jobs failed on following builders:
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)

[ernstm, 2014-05-10 22:06:00]

The CQ bit was checked by ernstm@chromium.org

[commit-bot: I haz the power, 2014-05-10 22:07:05]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ernstm@chromium.org/272033002/20001

[commit-bot: I haz the power, 2014-05-11 01:41:04]

Change committed as 269682