cc: Disable low res in non-smoothness mode.

cc: Disable low res in non-smoothness mode.

This patch ensures that we don't rasterize low res tiles unless we're
in smoothness mode. The reasoning is that the visible area that is
going to be covered already will have high res tiles returned for
rasterization, so we don't need to bother with low res.

Once a smoothness mode is entered, we will first rasterize low res
tiles, followed by high res tiles.

R=reveman

Committed: https://crrev.com/27730bed93e15aefc18dbe52412c2d6302ab7e76
Cr-Commit-Position: refs/heads/master@{#300699}

[vmpstr, 2014-10-21 21:54:56]

PTAL

[vmpstr, 2014-10-21 22:17:31]

... now with test fixes

[reveman, 2014-10-22 02:26:04]

lgtm

[danakj, 2014-10-22 14:27:39]

danakj@chromium.org changed reviewers:
+ danakj@chromium.org

[danakj, 2014-10-22 14:27:40]

https://codereview.chromium.org/665423002/diff/20001/cc/layers/picture_layer_...
File cc/layers/picture_layer_impl_unittest.cc (right):

https://codereview.chromium.org/665423002/diff/20001/cc/layers/picture_layer_...
cc/layers/picture_layer_impl_unittest.cc:3796: EXPECT_EQ(unoccluded_tile_count,
25);
LGTM if there's still a test somewhere for the case where we are in smoothness
mode.

[vmpstr, 2014-10-22 14:40:17]

https://codereview.chromium.org/665423002/diff/20001/cc/layers/picture_layer_...
File cc/layers/picture_layer_impl_unittest.cc (right):

https://codereview.chromium.org/665423002/diff/20001/cc/layers/picture_layer_...
cc/layers/picture_layer_impl_unittest.cc:3796: EXPECT_EQ(unoccluded_tile_count,
25);
On 2014/10/22 14:27:40, danakj wrote:
> LGTM if there's still a test somewhere for the case where we are in smoothness
> mode.

Yeah, there are some tests for smoothness as well.

[vmpstr, 2014-10-22 14:40:22]

The CQ bit was checked by vmpstr@chromium.org

[commit-bot: I haz the power, 2014-10-22 14:41:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/665423002/20001

[commit-bot: I haz the power, 2014-10-22 17:47:02]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-10-22 17:47:34]

Patchset 2 (id:??) landed as
https://crrev.com/27730bed93e15aefc18dbe52412c2d6302ab7e76
Cr-Commit-Position: refs/heads/master@{#300699}