Reland: Implement effect compositing for indirect reasons

Reland: Improve performance of GeometryMapper cache.

New version initializes m_cacheGeneration in GeometryMapperClipCache and
GeometryMapperTransformCache constructors. Verified it fixes the msan
layout test failures.

1. Store clips and transforms in vectors attached to the clip and transform nodes.
This avoids all hash map lookups. Invalidation uses a global cache generation id
(currently we don't support anything other than global invalidation of the
GeometryMapper caches).

2. Return clips and transforms by reference, to avoid copying.

and transforms relative to the same ancestor, so the vectors are short and hash
lookups are reduced.


BUG=692614
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2729243002
Cr-Commit-Position: refs/heads/master@{#455571}
Committed: https://chromium.googlesource.com/chromium/src/+/ee72c4b5d2fd1e4882bddca66e0f89fe8784a7fc

patch from issue 2729243002 at patchset 690001 (http://crrev.com/2729243002#ps690001)

Review-Url: https://codereview.chromium.org/2741803002
Cr-Commit-Position: refs/heads/master@{#455850}
Committed: https://chromium.googlesource.com/chromium/src/+/890521e5189ff65fb2c16f67c837cc09bcf503c9

[chrishtr, 2017-03-09 18:02:31]

Description was changed from

==========
none


Improve performance of GeometryMapper cache.

1. Store clips and transforms in vectors attached to the clip and transform
nodes.
This avoids all hash map lookups. Invalidation uses a global cache generation id
(currently we don't support anything other than global invalidation of the
GeometryMapper caches).

2. Return clips and transforms by reference, to avoid copying.

and transforms relative to the same ancestor, so the vectors are short and hash
lookups are reduced.

BUG=692614
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2729243002
Cr-Commit-Position: refs/heads/master@{#455571}
Committed:
https://chromium.googlesource.com/chromium/src/+/ee72c4b5d2fd1e4882bddca66e0f...

patch from issue 2729243002 at patchset 690001
(http://crrev.com/2729243002#ps690001)
==========

to

==========
Reland: Improve performance of GeometryMapper cache.

New version initializes m_cacheGeneration in GeometryMapperClipCache and
GeometryMapperTransformCache constructors. Verified it fixes the msan
layout test failures.

1. Store clips and transforms in vectors attached to the clip and transform
nodes.
This avoids all hash map lookups. Invalidation uses a global cache generation id
(currently we don't support anything other than global invalidation of the
GeometryMapper caches).

2. Return clips and transforms by reference, to avoid copying.

and transforms relative to the same ancestor, so the vectors are short and hash
lookups are reduced.


BUG=692614
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2729243002
Cr-Commit-Position: refs/heads/master@{#455571}
Committed:
https://chromium.googlesource.com/chromium/src/+/ee72c4b5d2fd1e4882bddca66e0f...

patch from issue 2729243002 at patchset 690001
(http://crrev.com/2729243002#ps690001)
==========

[chrishtr, 2017-03-09 18:02:43]

chrishtr@chromium.org changed reviewers:
+ pdr@chromium.org, wangxianzhu@chromium.org

[Xianzhu, 2017-03-09 18:06:04]

lgtm

[chrishtr, 2017-03-09 18:07:41]

The CQ bit was checked by chrishtr@chromium.org

[commit-bot: I haz the power, 2017-03-09 18:08:17]

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, 2017-03-09 20:22:30]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489082861900480, "parent_rev":
"b7d65eda07d21cff0513ba84c90fc9b29fa53577", "commit_rev":
"890521e5189ff65fb2c16f67c837cc09bcf503c9"}

[commit-bot: I haz the power, 2017-03-09 20:23:15]

Description was changed from

==========
Reland: Improve performance of GeometryMapper cache.

New version initializes m_cacheGeneration in GeometryMapperClipCache and
GeometryMapperTransformCache constructors. Verified it fixes the msan
layout test failures.

1. Store clips and transforms in vectors attached to the clip and transform
nodes.
This avoids all hash map lookups. Invalidation uses a global cache generation id
(currently we don't support anything other than global invalidation of the
GeometryMapper caches).

2. Return clips and transforms by reference, to avoid copying.

and transforms relative to the same ancestor, so the vectors are short and hash
lookups are reduced.


BUG=692614
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2729243002
Cr-Commit-Position: refs/heads/master@{#455571}
Committed:
https://chromium.googlesource.com/chromium/src/+/ee72c4b5d2fd1e4882bddca66e0f...

patch from issue 2729243002 at patchset 690001
(http://crrev.com/2729243002#ps690001)
==========

to

==========
Reland: Improve performance of GeometryMapper cache.

New version initializes m_cacheGeneration in GeometryMapperClipCache and
GeometryMapperTransformCache constructors. Verified it fixes the msan
layout test failures.

1. Store clips and transforms in vectors attached to the clip and transform
nodes.
This avoids all hash map lookups. Invalidation uses a global cache generation id
(currently we don't support anything other than global invalidation of the
GeometryMapper caches).

2. Return clips and transforms by reference, to avoid copying.

and transforms relative to the same ancestor, so the vectors are short and hash
lookups are reduced.


BUG=692614
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2729243002
Cr-Commit-Position: refs/heads/master@{#455571}
Committed:
https://chromium.googlesource.com/chromium/src/+/ee72c4b5d2fd1e4882bddca66e0f...

patch from issue 2729243002 at patchset 690001
(http://crrev.com/2729243002#ps690001)

Review-Url: https://codereview.chromium.org/2741803002
Cr-Commit-Position: refs/heads/master@{#455850}
Committed:
https://chromium.googlesource.com/chromium/src/+/890521e5189ff65fb2c16f67c837...
==========

[commit-bot: I haz the power, 2017-03-09 20:23:16]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/890521e5189ff65fb2c16f67c837...