The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5942181be68e28305ce40d64c5ba26854d9e3e3c

commit 5942181be68e28305ce40d64c5ba26854d9e3e3c
Author: aboxhall <aboxhall@chromium.org>
Date: Wed Nov 30 21:07:57 2016

Implement aria-placeholder

BUG= 665611 

Review-Url: https://codereview.chromium.org/2492083002
Cr-Commit-Position: refs/heads/master@{#435414}

[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/components/test_runner/web_ax_object_proxy.cc
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/components/test_runner/web_ax_object_proxy.h
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/browser/accessibility/browser_accessibility_win.cc
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/renderer/accessibility/blink_ax_enum_conversion.cc
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/renderer/accessibility/blink_ax_tree_source.cc
[add] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/aria/input-text-aria-placeholder-expected-android.txt
[add] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/aria/input-text-aria-placeholder-expected-blink.txt
[add] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/aria/input-text-aria-placeholder-expected-mac.txt
[add] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/aria/input-text-aria-placeholder-expected-win.txt
[add] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/aria/input-text-aria-placeholder.html
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/html/input-text-name-calc-expected-android.txt
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/html/input-text-name-calc-expected-win.txt
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/content/test/data/accessibility/html/input-text-name-calc.html
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/accessibility/computed-name-expected.txt
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/accessibility/computed-name.html
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/accessibility/description-calc-inputs.html
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/accessibility/name-calc-inputs.html
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-nameSources-input-expected.txt
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-nameSources-input.html
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-nameSources-labelledby-expected.txt
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-nameSources-visiblity-expected.txt
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/Source/core/html/HTMLAttributeNames.in
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/Source/modules/accessibility/AXNodeObject.h
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/Source/modules/accessibility/AXObject.h
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/Source/web/AssertMatchingEnums.cpp
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/Source/web/WebAXObject.cpp
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/public/web/WebAXEnums.h
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/third_party/WebKit/public/web/WebAXObject.h
[modify] https://crrev.com/5942181be68e28305ce40d64c5ba26854d9e3e3c/tools/accessibility/rebase_dump_accessibility_tree_test.py