LogUnits have been annotated with the autocorrected words, but
until now this was assumed to be a single word without spaces.
But spaceless typing can result in spaces in the LogUnit label.  With this
change, the LogUnit inspects the autocorrected text to determine how many
words were inserted, and counts them accurately.

This change corrects a privacy problem, which was that if the word sampling
algorithm chose a LogUnit that actually contained multiple words, then more
than two successive words would be included in the log.

Change-Id: I7c01c3dd3ac33d7e96c00836256bae9c14b124ed

* commit '93c31e17':
  Fix bug to update last interpolated index of GestureStroke

am 17e55d3b: am 45fd237c: merge in jb-ub-latinimegoogle-azuki history after reset to jb-ub-latinimegoogle

* commit '17e55d3b':
  Import translations. DO NOT MERGE
  Import translations. DO NOT MERGE

* commit '05da1df8':

* commit 'ad3ebcbd':

am 38d52c0a: am a694c9ba: am ff766f8c: Merge "Don\'t insert automatic spaces when text looks like a URL"

* commit '38d52c0a':

* commit '38046a0a':

* commit 'a23e25cc':

* commit '7f8e55ec':

* commit 'ca796e2d':

* commit '074fee65':

* commit 'fe48f31e':

* commit '57ac9afc':

* commit '5557bf5b':

am 895fca8f: am 7cb72808: am 785c5068: (-s ours) am 5eb28c19: am a130057b: Import translations. DO NOT MERGE

* commit '895fca8f':

* commit '590fb058':

* commit 'c3ef0606':
  Import translations. DO NOT MERGE

* commit '892f1b46':

* commit '441fbbaf':

* commit '203af810':

* commit '0376d9a0':

* commit '5e5bd3b6':

* commit 'd69892fc':

am 2532265d: am 34676d92: am a022c538: Merge "If there are no suggestion span, recompute suggestions."

* commit '2532265d':

* commit 'da9c04cd':

* commit 'ae731331':

am 577dc189: am 1a42236a: am 4b6756db: Merge "Remove unnecessary harmful finish() from SettingsActivity"

* commit '577dc189':

* commit '18c362d7':

* commit '9797dd2e':

am 333bb7db: am eabb710b: am f224941c: Merge "Suppress calling onPressKey and onReleaseKey while detecting gesture"

* commit '333bb7db':

am ed497d24: am 089f1ce9: am bfb07ed7: Merge "Add preference dependency to gesture input related options"

* commit 'ed497d24':

* commit 'd244574b':

am b8540f8e: am 18414333: am e2af9b7e: Merge "Reset vertical correction when more suggestions are in modal mode"

* commit 'b8540f8e':

* commit '9b7fefea':

* commit 'ba5e450e':

* commit 'e157fa50':

* commit 'b0d3d86c':

am 4793943e: am a270f90a: am dc64866c: (-s ours) am 0dbc8c35: am f2ab0adc: Import translations. DO NOT MERGE

* commit '4793943e':

* commit '97aa9c40':