Fix landing: https://codereview.chromium.org/2772913003/

Marking as RBS because this is a requirement for Android O. If we don't need to be in Chrome 58 to be on Android O then the RBS is not necessary.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cbf2ebc6e589a5aa81d29c78cf392182de4329bb

commit cbf2ebc6e589a5aa81d29c78cf392182de4329bb
Author: dmazzoni <dmazzoni@chromium.org>
Date: Fri Mar 24 16:22:13 2017

AXObject::performDefaultAction() should focus if it can't click

The user-visible bug here is that sending a CLICK event to a text field on
Android does nothing, because a text field doesn't have a default action.

I could fix this on the Android side, but this seems wrong to me. If
performDefaultAction() is called on a focusable control, I think the natural
thing to do is focus it if there's no "press" behavior. So I think we should
handle that generally.

Let me know if you have any objection and I could make it more narrow. But to
me it seems more useful this way.

BUG= 703659 

Review-Url: https://codereview.chromium.org/2772913003
Cr-Commit-Position: refs/heads/master@{#459448}

[add] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/LayoutTests/accessibility/press-works-on-text-fields.html
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXMenuList.cpp
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXMenuList.h
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXMenuListPopup.cpp
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXMenuListPopup.h
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXObject.h
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp
[modify] https://crrev.com/cbf2ebc6e589a5aa81d29c78cf392182de4329bb/third_party/WebKit/Source/modules/accessibility/AXSpinButton.h

Requesting merge to M58 because this is required for Android O

Your change meets the bar and is auto-approved for M58. Please go ahead and merge the CL to branch 3029 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/abb8b3588f8f814d9dec639b9c3a3208ad132478

commit abb8b3588f8f814d9dec639b9c3a3208ad132478
Author: Dominic Mazzoni <dmazzoni@chromium.org>
Date: Fri Mar 24 20:16:22 2017

Merge to M58: AXObject::performDefaultAction() should focus if it can't click

The user-visible bug here is that sending a CLICK event to a text field on
Android does nothing, because a text field doesn't have a default action.

I could fix this on the Android side, but this seems wrong to me. If
performDefaultAction() is called on a focusable control, I think the natural
thing to do is focus it if there's no "press" behavior. So I think we should
handle that generally.

Let me know if you have any objection and I could make it more narrow. But to
me it seems more useful this way.

BUG= 703659 

Review-Url: https://codereview.chromium.org/2772913003
Cr-Commit-Position: refs/heads/master@{#459448}
(cherry picked from commit cbf2ebc6e589a5aa81d29c78cf392182de4329bb)

Review-Url: https://codereview.chromium.org/2770333002 .
Cr-Commit-Position: refs/branch-heads/3029@{#413}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}

[add] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/LayoutTests/accessibility/press-works-on-text-fields.html
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXMenuList.cpp
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXMenuList.h
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXMenuListPopup.cpp
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXMenuListPopup.h
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXObject.cpp
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXObject.h
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXSpinButton.cpp
[modify] https://crrev.com/abb8b3588f8f814d9dec639b9c3a3208ad132478/third_party/WebKit/Source/modules/accessibility/AXSpinButton.h