I think probably a lot of other things on here should be fixed. At first glance:

QuerySelector
QuerySelectorAll
Children
InsertBefore
ReplaceChild
RemoveChild
AppendChild

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/17a207e062459d1d720824e03c96128901f7f531

commit 17a207e062459d1d720824e03c96128901f7f531
Author: Daniel Cheng <dcheng@chromium.org>
Date: Mon Apr 24 05:40:59 2017

Use lowercase names for ContainerNode::firstChild/ContainerNode::lastChild

Bug: 713301
Change-Id: I5877de2dbb00cbf676a23435aacf91fc1d4ae9d3

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Change-Id: I5877de2dbb00cbf676a23435aacf91fc1d4ae9d3
Reviewed-on: https://chromium-review.googlesource.com/484729
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#466589}
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/css/SelectorChecker.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/ChildNodeList.h
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/ContainerNode.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/ContainerNode.h
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/Document.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/DocumentTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/Element.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/MutationObserverTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/Node.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/NodeTraversal.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/Range.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/RangeTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/StaticRangeTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/TextTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/VisitedLinkState.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/shadow/ElementShadowV0.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/shadow/FlatTreeTraversalTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/EditorTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/FrameCaretTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/FrameSelectionTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/GranularityStrategyTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/SelectionAdjuster.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/SelectionControllerTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/SelectionTemplateTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/SurroundingTextTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/VisiblePositionTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/VisibleSelectionTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/VisibleUnitsTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/ApplyBlockElementCommandTest.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/FormatBlockCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/IndentOutdentCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/InsertIncrementalTextCommandTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/InsertListCommandTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/InsertParagraphSeparatorCommand.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/ReplaceSelectionCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/ReplaceSelectionCommandTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/SetCharacterDataCommandTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/SplitElementCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/SplitTextNodeContainingElementCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/commands/TypingCommand.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/iterators/CharacterIteratorTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/markers/DocumentMarkerControllerTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/serializers/Serialization.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/serializers/StyledMarkupSerializerTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/editing/spellcheck/SpellCheckerTest.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLDetailsElement.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLInputElementTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLLinkElementTest.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLSelectElementTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLTableElement.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLTextAreaElement.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLTitleElement.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/HTMLVideoElement.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/TextControlElement.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/forms/BaseButtonInputType.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/forms/DateTimeEditElement.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/forms/DateTimeFieldElement.cpp
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[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/forms/OptionListTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/forms/PasswordInputTypeTest.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/parser/HTMLConstructionSite.cpp
[modify] https://crrev.com/17a207e062459d1d720824e03c96128901f7f531/third_party/WebKit/Source/core/html/track/vtt/VTTCue.cpp
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