ResearchLogging capture full n-gram data

- Captures complete motion data for all words in an n-gram.
- Also filters n-grams properly; if any word in the n-gram is not
  in the dictionary, it is not included.
- Simplify ResearchLog to not require explicit state
- Added LogBuffer class MainLogBuffer class to allow n-gram-level decisions
  about privacy.
- Moved LogUnit out from ResearchLogger

multi-project change with Id997fb6572daa3ff55591afa1676953bb204f33a

Because of a strange Gerrit interaction, earlier patchsets were recorded
as the following separate changes (to soon be abandoned):

- I59d86ae28123890ddb7aabc7dc9a73a75eecbca4
- I9cc95266fa4500d019e09ec53ec00e5dea7ffd38
- Ie6f23a2035e160f231406df1388a43725380df1d
- Id87909e96fa7fa91174c86395a964404f3490fe1
- I57c5cbde0425c42538d589fa4d1802b3e5688f7c
- Ic1f9d7727e416da1b6c4f1a45b53750cd4088dcf
- I20a72ccc4ba1bc08ed3ee39bff71d2adb376588c
- I417f6f364144b90085f5fef4bd2de1a40b5dfa79

Bug: 6188932
Change-Id: I771e57e3b8c0eb6721c2022e775cb0b528bdff93

1 files changed, 5 insertions, 3 deletions

diff --git a/java/src/com/android/inputmethod/research/FeedbackActivity.java b/java/src/com/android/inputmethod/research/FeedbackActivity.java
index c9f3b476a..11eae8813 100644
--- a/java/src/com/android/inputmethod/research/FeedbackActivity.java
+++ b/java/src/com/android/inputmethod/research/FeedbackActivity.java
@@ -18,10 +18,7 @@ package com.android.inputmethod.research;
 
 import android.app.Activity;
 import android.os.Bundle;
-import android.text.Editable;
-import android.view.View;
 import android.widget.CheckBox;
-import android.widget.EditText;
 
 import com.android.inputmethod.latin.R;
 
@@ -31,6 +28,11 @@ public class FeedbackActivity extends Activity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.research_feedback_activity);
         final FeedbackLayout layout = (FeedbackLayout) findViewById(R.id.research_feedback_layout);
+        final CheckBox checkbox = (CheckBox) findViewById(R.id.research_feedback_include_history);
+        final CharSequence cs = checkbox.getText();
+        final String actualString = String.format(cs.toString(),
+                ResearchLogger.FEEDBACK_WORD_BUFFER_SIZE);
+        checkbox.setText(actualString);
         layout.setActivity(this);
     }