Bug 1393098 part 0: Refactor logic (add helper bool & reduce GetParent calls), in nsTextFrame::CharacterDataChanged. r=jfkthame This patch doesn't affect behavior at all -- it just adjusts the logic slightly. Specifically, this patch: (a) Changes some code that currently tracks a frame, to now instead track that frame's parent, since we only ever call GetParent() on it anyway. (b) Drops a null-check that becomes unnecessary as a result of that change. (It was only there to protect us from calling GetParent() on a null pointer during the first loop iteration, and now that's not a risk since we're tracking the parent itself, and a null value will fail the equality comparison and do the right thing.) (c) Captures the "are ancestors already aware of a reflow request for my subtree" if-condition in a named boolean helper-variable. (d) Adds/improves documentation. MozReview-Commit-ID: 7dEflfiERYB

servo: Merge #18330 - stylo: Add a special case for marking something as dirty from invalidation code (from emilio:invalidation-stuff); r=bholley Source-Repo: https://github.com/servo/servo Source-Revision: 09df9c4316779899c7820cac56ecd18793f1f4a3

Bug 1395613 - import bundles from devtools-source-map 0.12.0; r=bgrins MozReview-Commit-ID: n5XTA3YN3G

Bug 1393274 - bustage: Add gravity=start where textAlignment to appease lint. r=mcomella Lint passes locally. MozReview-Commit-ID: 8f6hBwjzoYJ

Bug 1393274: Correct webpage RTL padding/margins. r=liuche Previously, I added a comment to explain why the explicit 0dp padding/margins are necessary for RTL but since it's required everywhere padding/margins are used, it's unsustainable and I chose not to do it here. MozReview-Commit-ID: H7H9xgeLy8b

Bug 1393274: Align webpage item row text to right in RTL, left in LTR. r=liuche MozReview-Commit-ID: 6VSF73V6Mda

Bug 1393274: Rename card_history_item -> webpage_item_row & friends. r=liuche Unrelated to RTL changes but these names are awful and gotta go! MozReview-Commit-ID: Kud6tgfEGkk

Bug 1391019 - Replace the py(3) task with py-compat lint task, r=gps MozReview-Commit-ID: ABtq9dnPo9T

Bug 1391019 - Add py2 and py3 compatability linters, r=gps check_compat.py was adapted from gps' check-py3-compat.py in mercurial: https://www.mercurial-scm.org/repo/hg/file/tip/contrib/check-py3-compat.py The py3 linter simply runs ast.parse(f) for each file being linted. Any syntax errors are formatted as mozlint results and dumped to stdout as json. I looked into also importing the file (using 3.5+'s importlib.util.spec_from_file_location), but there were too many problems: 1. Lots of false positives (e.g module not found) 2. Some files seemed to run indefinitely on import I decided to punt on importing for now, we can always investigate in a follow-up. The py2 linter runs ast.parse(f), and also checks that the file has: from __future__ import absolute_import, print_function Initially every python file in the tree is excluded from the py2 check, though at least this makes it easy to find+fix, and new files in un-excluded directories will automatically be linted. MozReview-Commit-ID: ABtq9dnPo9T

Bug 1391019 - Move tools/lint/flake_/__init__.py to tools/lint/python/flake8.py, r=gps This will allow us keep python related linting files in the same place. MozReview-Commit-ID: ABtq9dnPo9T

Bug 1395327 - Disable webrender samplers, as they're causing MacOS to crash. r=kats MozReview-Commit-ID: EU599EOaZZ7

Bug 1386862: stylo: Turn on the devtools/client/inspector/rules/test/browser_rules_edit-selector_12.js test. r=bholley,jryans MozReview-Commit-ID: 2hoir7rgybi

Backed out 3 changesets (bug 1393274) for android lint failures a=backout Backed out changeset 52e7fa268a65 (bug 1393274) Backed out changeset 29e8bf6a34c1 (bug 1393274) Backed out changeset 03063f77c3f5 (bug 1393274) MozReview-Commit-ID: 5BOV55zQaFf

Bug 1388611 - Preserve .sqlite-wal files with a Firefox Reset. r=mak MozReview-Commit-ID: At6IY39uNPt

Bug 1388611 - Update mProfileName after a profile reset to handle multiple consecutive resets. r=Dolske Follow-up to bug 1122124 to ensure `SaveWordToEnvIfUnset("XRE_PROFILE_NAME", mProfileName);` saves the updated profile name after reset takes the old profiles name. MozReview-Commit-ID: MTJAQUKktM

Bug 1393274: Correct webpage RTL padding/margins. r=liuche Previously, I added a comment to explain why the explicit 0dp padding/margins are necessary for RTL but since it's required everywhere padding/margins are used, it's unsustainable and I chose not to do it here. MozReview-Commit-ID: H7H9xgeLy8b

Bug 1393274: Align webpage item row text to right in RTL, left in LTR. r=liuche MozReview-Commit-ID: 6VSF73V6Mda

Bug 1393274: Rename card_history_item -> webpage_item_row & friends. r=liuche Unrelated to RTL changes but these names are awful and gotta go! MozReview-Commit-ID: Kud6tgfEGkk

Backed out changeset 2a69de9c73c6 (bug 1351081) for dt failures in browser_inspector_highlighter-cssshape_03.js a=backout MozReview-Commit-ID: FYdGE6c4LLh

Bug 1369677 - Handle RenderTexture lock() failed. r=nical MozReview-Commit-ID: Ghez1SJ6ghf