Adds button in the same location as the menu button and overrides
it when present.  The setNavigationHintIconHints lets it know when
the button should be shown.

Bug: 14257632
Change-Id: Ia80de7fd2390cd8b083e37cbe58b7ee53555e619

Change-Id: Ibfa4ae7b1bc269bc51532026f8a6cc3c75cc42bf

TvInputManagerService now creates an InputChannel pair and passes one
end to the app and the other end to the service. Then the TvInputManager
in the app creates an InputEventSender around one end of the channel to
send events and the service creates an InputEventReceiver around the
other end of the channel to receive events.
Most of the newly added code here was borrowed heavily from the IME.

Change-Id: I0bd83847cba0033ccb6f4b6dad267ebeaf5e9c7c

* commit '45641ecd':
  Fix two zygote imports.

* commit 'c4e6f6d2':
  Remove unused import.

* commit '7af8f5ba':
  Fix two zygote imports.

* commit 'cf939672':
  Remove unused import.

* commit '10d57c4b':
  Fix two zygote imports.

* commit '2e9d924d':
  Remove unused import.

Change-Id: I5eea2d9f48479c33e1594aaa259274e5e787a1df

Change-Id: I3f6a035cda55859a7a521f3117da72ee962beb63

Change-Id: Id328544bd3a382fec16507d0ae5b699fef44ebd7

Change-Id: I9e1a5280d3356e8814e505915bbc74200bc58b40

am 3e792ef7: am fff28619: am f4a7ac00: Merge "Move the Zygote off libcore.os and onto android.system."

* commit '3e792ef7':
  Move the Zygote off libcore.os and onto android.system.

* commit 'fff28619':
  Move the Zygote off libcore.os and onto android.system.

* commit 'f4a7ac00':
  Move the Zygote off libcore.os and onto android.system.

Change-Id: Iaa20e50b05fad355bdf15bcfdc58efc9941c400c

Change-Id: I84e1ace19ba3b4e58d7bb24f3ecda1bdf5dc75a5

Change-Id: I4f55b27425899f25cb22d4466e3413ad27b5a302

am 3914a33c: am 26a5c2dd: Merge "Followon fix for 14276128 Clipping at bottom of TextView" into klp-modular-dev

* commit '3914a33c':
  Followon fix for 14276128 Clipping at bottom of TextView

* commit '26a5c2dd':
  Followon fix for 14276128 Clipping at bottom of TextView

am 86318b7d: am 0c18705b: am 3fef8e60: am 1053b2c5: Merge "Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html" into klp-docs

* commit '86318b7d':
  Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html

am 0c18705b: am 3fef8e60: am 1053b2c5: Merge "Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html" into klp-docs

* commit '0c18705b':
  Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html

am 3fef8e60: am 1053b2c5: Merge "Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html" into klp-docs

* commit '3fef8e60':
  Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html

Change-Id: I93c4670c1ee0b0be5956b0ed8cd0f53873257f7c

Change-Id: Ie6d1e7c3e5dcf721e945c4933c077fa6abb10067

am 1053b2c5: Merge "Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html" into klp-docs

* commit '1053b2c5':
  Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html

Merge "Fixed missing line break, broken link. Bug: 13975265 Staged at: http://boku:9195/guide/topics/manifest/manifest-element.html" into klp-docs

Change-Id: I3dd3b683a66e248a0fdf2ca69d1e962615b0daf9