Because a keyboard handling hover events and determining a virtual
node by itself, there is no need to supply whole virtual nodes info
for the keyboard. Just returning an empty accessibility node info
supresses annoucements of all keys.

This CL also fixes the undefined virtual id value.

Bug: 15582251
Change-Id: Ie033d21ef878d272417cf2b20f8eec1e516587f6

The previous time out was 1500 milliseconds that wasn't enough for
announcing some accented letters, for example "Ü". This CL makes the
time out to 3000 milliseconds.

BUG: 15582951
Change-Id: I9bf864389c359e3b9abfe5000b897cf742a8dbe7

A more keys keyboard may have a divider on it. The MoreKeysDetector
should be used even with accessibility mode on to be able to handle a
divider.

Bug: 15583354
Change-Id: Ife2cf8304496c4c330127fde8ca1f34c2f0838e2

Bug: 14161647
Change-Id: I7ab3d701525e9a19bc100aa577527e332bb2ad95

With accessibility mode on, hover events for a more keys keyboard are
handled among MoreKeysKeyboardAccessibilityDelegate and
MoreKeysKeyboardView. But the more keys keyboard is shown by
MainKeyboardAccessibilityDelegate that uses PointerTracker to handle
hover events. Thus we need to clear PointerTracker state when the more
keys keyboard is dismissed.

This is a workaround to resolve the issue. We should reconsider the
structure of those views and accessibility delegates in the future.

Bug: 15583751
Change-Id: Ida8c3e55194c59bdaa5bc4ff06068e699b888ced

Bug: 15300452

Change-Id: Ic6c91c47453e19fb5db2c62b66659619e72b1ecf

Change-Id: Ic86260b4e49ebda2ee718eadf0109ad9626a68e6

This reverts commit 1690992d.

Build.VERSION.SDK_INT is bumped with I4716e71d72b2526fe635079d1b.                                                                                     
We no longer need this workaround.

Change-Id: I75a1c2a7055af17a7d40291aadd62ae9bb42e056

Bug: 15579928
Change-Id: I6bcf885f2c1aa37b337a85978409ccf41e459c2a

Bug: 14119293
Change-Id: I594a1ca1096f0c12c678dd30eb75de905e55c5bb

Bug: 14161647
Bug: 14119293
Change-Id: I0c00f13966db88e4de85e245e7bced43c9d474b2

Bug: 15552347
Change-Id: Iadcdc73d3335d561a27b9314d3fcdab0b0c96e49

Bug: 15552347
Change-Id: Ic713f79ef26b5963060304df9c0a3a402c3cc6d4

Bug: 15557070
Change-Id: I5796df54a74c111d361da8c548e5597aba8e24d0

Bug: 15531465
Change-Id: Ic7fe5743ad3767cdaed699e5e2d1ebcaa75e22c2

* commit 'b25404ec':
  Use LOCAL_MULTILIB to build host lib as 64-bit

* commit '278b9071':
  Rename keyboard theme Quantum to Material

This adds "Dump contextual dictionary".

Bug: 14161647
Change-Id: I41a6d6e131d9d8c300ac0120d903d46d88bb3346

Special case <valid word>.<valid word> to send as a suggestion
the same string where the periods is replaced by a space.

Bug: 10780091
Change-Id: I43c94675977f9ab5d7ee5671486cb742b39f3974

Change-Id: Ib0150b3306bb2db8aff443d1158fecc8464cbbdb

Bug: 13630847
Change-Id: Ib4513b8cb6981e01dd33fd9703cc01646a2c7ccc