Widen the keyboard detection logic on Windows 8 touch devices and detect slate mode to force OSK on.

Widen the keyboard detection logic on Windows 8 touch devices and detect slate mode to force OSK on.

Changes in this patch as below:-

1. We now check if the device is docked and avoid displaying the OSK in this case.

2. Check the auto rotation state of the device via the
   GetAutoRotationState API. If auto rotation is disabled
   or not supported we can safely assume that a keyboard
   is present on the system.

3. Allow ACPI\* device names in the keyboard device name matching code.

4. Detect if the device is in slate mode, i.e. the keyboard is flipped. We need to display
   the OSK in this case.

BUG=335735
Committed: https://crrev.com/6c49583dfa8912e769d313ea8bae19a23bc09879
Cr-Commit-Position: refs/heads/master@{#319826}

[ananta, 2015-03-07 02:16:41]

ananta@chromium.org changed reviewers:
+ cpu@chromium.org

[cpu_(ooo_6.6-7.5), 2015-03-09 20:30:05]

lgtm

https://codereview.chromium.org/988883003/diff/20001/base/win/win_util.cc
File base/win/win_util.cc (right):

https://codereview.chromium.org/988883003/diff/20001/base/win/win_util.cc#new...
base/win/win_util.cc:114: POWER_PLATFORM_ROLE role =
PowerDeterminePlatformRole();
is PowerDeterminePlatformRole() delay loaded?  does not exist in xp.

[ananta, 2015-03-10 00:58:01]

The CQ bit was checked by ananta@chromium.org

[commit-bot: I haz the power, 2015-03-10 00:58:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/988883003/20001

[ananta, 2015-03-10 02:00:59]

https://codereview.chromium.org/988883003/diff/20001/base/win/win_util.cc
File base/win/win_util.cc (right):

https://codereview.chromium.org/988883003/diff/20001/base/win/win_util.cc#new...
base/win/win_util.cc:114: POWER_PLATFORM_ROLE role =
PowerDeterminePlatformRole();
On 2015/03/09 20:30:05, cpu wrote:
> is PowerDeterminePlatformRole() delay loaded?  does not exist in xp.

The IsTabletDevice function calls this API today. In any case this function
should be invoked on Windows 8+

[commit-bot: I haz the power, 2015-03-10 02:43:35]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-10 02:44:22]

Patchset 2 (id:??) landed as
https://crrev.com/6c49583dfa8912e769d313ea8bae19a23bc09879
Cr-Commit-Position: refs/heads/master@{#319826}