Use new recordBoolean functions in Select-to-Speak and Chromevox.

These simplify recording a boolean value and are more readable.

Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I77165d0f6aaa760c7126d7c29083f139600fcf5d
Reviewed-on: https://chromium-review.googlesource.com/820631
Commit-Queue: Katie D <katie@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523684}

chrome/browser/resources/chromeos/chromevox/cvox2/background/background.js

@@ -181,15 +181,8 @@ Background = function() {
 
   // Record a metric with the mode we're in on startup.
   var useNext = localStorage['useClassic'] != 'true';
-  chrome.metricsPrivate.recordValue(
-      {
-        metricName: 'Accessibility.CrosChromeVoxNext',
-        type: chrome.metricsPrivate.MetricTypeType.HISTOGRAM_LINEAR,
-        min: 1,  // According to histogram.h, this should be 1 for enums.
-        max: 2,  // Maximum should be exclusive.
-        buckets: 3
-      },  // Number of buckets: 0, 1 and overflowing 2.
-      useNext ? 1 : 0);
+  chrome.metricsPrivate.recordBoolean(
+      'Accessibility.CrosChromeVoxNext', useNext);
 
   Notifications.onStartup();
 };

chrome/browser/resources/chromeos/select_to_speak/select_to_speak.js

@@ -692,15 +692,9 @@ SelectToSpeak.prototype = {
     chrome.metricsPrivate.recordSparseValue(
         'Accessibility.CrosSelectToSpeak.SpeechRate',
         this.speechRateToSparceHistogramInt_());
-    chrome.metricsPrivate.recordValue(
-        {
-          metricName: 'Accessibility.CrosSelectToSpeak.WordHighlighting',
-          type: chrome.metricsPrivate.MetricTypeType.HISTOGRAM_LINEAR,
-          min: 1,     // According to histogram.h, this should be 1 for enums.
-          max: 2,     // Maximum should be exclusive.
-          buckets: 3  // Number of buckets: 0, 1 and overflowing 2.
-        },
-        this.wordHighlight_ ? 1 : 0);
+    chrome.metricsPrivate.recordBoolean(
+        'Accessibility.CrosSelectToSpeak.WordHighlighting',
+        this.wordHighlight_);
   },
 
   /**