The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0a8618b26560b57be00a6d18e0af01aeac89681f

commit 0a8618b26560b57be00a6d18e0af01aeac89681f
Author: donnd <donnd@chromium.org>
Date: Wed May 31 21:01:51 2017

[TTS] Move Ranker logging to inference time.

Changes logging of Ranker features to make sure they are done at
inference-time or beforehand, instead of allowing them to be done
after inference.  Logging of outcomes can be done at any time.

Adds a queue for all the features so they can all be logged at the same
time, or the logging can easily be aborted at the last minute.

Updates handling of before-scroll to have a configurable pause
to allow scrolling after a Tap has been recognized.  Before-scroll
is no longer considered a Ranker-feature: It's handled by the normal
detection of any action that can dismiss the panel during the time
between a tap and showing the UI.

Updates UKM feature-names from all-caps to camelcase.  Removes the
Before-scroll feature from Ranker logging through UKM.

Also remove some leftover Blacklist code that's no longer needed.

BUG= 721588 

Review-Url: https://codereview.chromium.org/2894913003
Cr-Commit-Position: refs/heads/master@{#476021}

[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanelMetrics.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/BarOverlapTapSuppression.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchHeuristic.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchHeuristics.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManager.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchRankerLogger.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchRankerLoggerImpl.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionController.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchSelectionHandler.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/CtrSuppression.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/NearTopTapSuppression.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/QuickAnswersHeuristic.java
[modify] https://crrev.com/0a8618b26560b57be00a6d18e0af01aeac89681f/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/RecentScrollTapSuppression.java