The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/089786a49457e7795ad0f8d325950ffdb5280792

commit 089786a49457e7795ad0f8d325950ffdb5280792
Author: David Bokan <bokan@chromium.org>
Date: Fri Jun 22 02:46:14 2018

[BlinkGenPropertyTrees] Dump cc property trees to console

To see logs start chrome/content_shell with:
  --vmodule=layer_tree_host=3

Bug:  854200 
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I1b03c2f11e0a05fa7588c8e31837e12488fc7b15
Reviewed-on: https://chromium-review.googlesource.com/1107263
Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: David Bokan <bokan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569516}
[modify] https://crrev.com/089786a49457e7795ad0f8d325950ffdb5280792/cc/trees/layer_tree_host.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/16c1e12e3bcbc17828b7c67dc3a4a12e25c1e776

commit 16c1e12e3bcbc17828b7c67dc3a4a12e25c1e776
Author: David Bokan <bokan@chromium.org>
Date: Mon Aug 13 23:35:40 2018

[BlinkGenPropertyTrees] Print logging per-line

This patch prints the property tree logging by printing each line
separately.

This prevents truncation of the logging output on Android, where:

  LOG << ...long multiline string...

Will be truncated after some finite number of characters. For long
outputs such as the property trees we hit this quite easily.

Bug:  854200 
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I7e70a5e66d8248b2faa478738db94c980c28e3f7
Reviewed-on: https://chromium-review.googlesource.com/1173156
Commit-Queue: David Bokan <bokan@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582744}
[modify] https://crrev.com/16c1e12e3bcbc17828b7c67dc3a4a12e25c1e776/cc/trees/layer_tree_host.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1f7e25a70e62195733872e864ce7e212817b7536

commit 1f7e25a70e62195733872e864ce7e212817b7536
Author: Philip Rogers <pdr@chromium.org>
Date: Thu Aug 16 18:37:29 2018

[BlinkGenPropertyTrees] Add simple layer list logging

This patch adds layer list logging. To use, start content shell with:
  --vmodule=layer_tree_host=3

Sample output:
  layer id 11
    element_id: (0)
    bounds: 800x600
    opacity: 1
    position: 0.000000,0.000000
    draws_content: 1
    scrollable: 0
    contents_opaque: 1
    transform_tree_index: 2
    clip_tree_index: 1
    effect_tree_index: 1
    scroll_tree_index: 1
  layer id 14
    ...

There is currently no logging for cc::Layer so a selection of important
properties has been dumped.

Bug:  854200 
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I938492167619c262976083291bd6db9b4a39fef5
Reviewed-on: https://chromium-review.googlesource.com/1175855
Commit-Queue: Philip Rogers <pdr@chromium.org>
Reviewed-by: David Bokan <bokan@chromium.org>
Reviewed-by: enne <enne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583755}
[modify] https://crrev.com/1f7e25a70e62195733872e864ce7e212817b7536/cc/trees/layer_tree_host.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/705f65456f9616912ba83610bcb44c70530baa4e

commit 705f65456f9616912ba83610bcb44c70530baa4e
Author: Philip Rogers <pdr@chromium.org>
Date: Thu Sep 13 21:28:51 2018

Add more LayerTreeHost and LayerTreeHostImpl logging

This patch has 4 changes:
1) Layer tree json now includes property tree indices.
2) Indentation has been fixed in LayerTreeHost::DoUpdateLayers so it's clear
the logging is for both layer-tree and layer-list codepaths.
3) LayerTreeHost::FinishCommitOnImplThread now dumps property trees and layer
list if --vmodule=layer_tree_host=3 is passed.
4) LayerTreeHostImpl::ActivateSyncTree now dumps property trees and layer
list if --vmodule=layer_tree_host_impl=3 is passed.

If you desire the ultimate logging experience, use: --vmodule=layer_tree_host*=3

Bug:  854200 

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I5ce6bf235eba1bc6dbcbcedf4781bf742d6004fa
Reviewed-on: https://chromium-review.googlesource.com/1217842
Reviewed-by: enne <enne@chromium.org>
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#591165}
[modify] https://crrev.com/705f65456f9616912ba83610bcb44c70530baa4e/cc/layers/layer_impl.cc
[modify] https://crrev.com/705f65456f9616912ba83610bcb44c70530baa4e/cc/trees/layer_tree_host.cc
[modify] https://crrev.com/705f65456f9616912ba83610bcb44c70530baa4e/cc/trees/layer_tree_host_impl.cc