Track constant InputDeviceCapabilities objects per-window.

Track constant InputDeviceCapabilities objects per-window.

Do not keep global main thread Persistent<>s for the two
constant InputDeviceCapabilities objects, as that will
end up sharing wrapper objects across contexts.

R=dcheng
BUG=688569
Review-Url: https://codereview.chromium.org/2675793005
Cr-Commit-Position: refs/heads/master@{#448597}
(cherry picked from commit 3867c9867bbb9bbe1d1d4c2c68b60073cb45caaf)

Conflicts:
	third_party/WebKit/Source/core/events/MouseEvent.cpp
	third_party/WebKit/Source/core/events/TouchEvent.cpp
	third_party/WebKit/Source/core/frame/DOMWindow.cpp
	third_party/WebKit/Source/core/frame/DOMWindow.h
	third_party/WebKit/Source/core/input/EventHandler.cpp

Review-Url: https://codereview.chromium.org/2687903002 .
Cr-Commit-Position: refs/branch-heads/2987@{#405}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/aca3d111188556531c1f536bc6aff38f2904b059

[sof, 2017-02-09 14:56:50]

Description was changed from

==========
Track constant InputDeviceCapabilities objects per-window.

Do not keep global main thread Persistent<>s for the two
constant InputDeviceCapabilities objects, as that will
end up sharing wrapper objects across contexts.

R=dcheng
BUG=688569

Review-Url: https://codereview.chromium.org/2675793005
Cr-Commit-Position: refs/heads/master@{#448597}
(cherry picked from commit 3867c9867bbb9bbe1d1d4c2c68b60073cb45caaf)

Conflicts:
	third_party/WebKit/Source/core/events/MouseEvent.cpp
	third_party/WebKit/Source/core/events/TouchEvent.cpp
	third_party/WebKit/Source/core/frame/DOMWindow.cpp
	third_party/WebKit/Source/core/frame/DOMWindow.h
	third_party/WebKit/Source/core/input/EventHandler.cpp
==========

to

==========
Track constant InputDeviceCapabilities objects per-window.

Do not keep global main thread Persistent<>s for the two
constant InputDeviceCapabilities objects, as that will
end up sharing wrapper objects across contexts.

R=dcheng
BUG=688569

Review-Url: https://codereview.chromium.org/2675793005
Cr-Commit-Position: refs/heads/master@{#448597}
(cherry picked from commit 3867c9867bbb9bbe1d1d4c2c68b60073cb45caaf)

Conflicts:
	third_party/WebKit/Source/core/events/MouseEvent.cpp
	third_party/WebKit/Source/core/events/TouchEvent.cpp
	third_party/WebKit/Source/core/frame/DOMWindow.cpp
	third_party/WebKit/Source/core/frame/DOMWindow.h
	third_party/WebKit/Source/core/input/EventHandler.cpp

Review-Url: https://codereview.chromium.org/2687903002 .
Cr-Commit-Position: refs/branch-heads/2987@{#405}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/aca3d111188556531c1f536bc6af...
==========

[sof, 2017-02-09 14:56:52]

Committed patchset #1 (id:1) manually as
aca3d111188556531c1f536bc6aff38f2904b059.