Improve braille related message descriptions and clean up message handling in Chromevox.

chrome/browser/resources/chromeos/chromevox/walkers/table_shifter.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Walkers to traverse a table.
  */
 
 
 goog.provide('cvox.TableShifter');
@@ skipping 45 matching lines @@
         this.currentWalker_.goToFirstCell(sel);
   }
   return this.currentWalker_.sync(sel);
 };
 
 
 /**
  * @override
  */
 cvox.TableShifter.prototype.getName = function() {
-  return cvox.ChromeVox.msgs.getMsg('table_shifter');
+  return Msgs.getMsg('table_shifter');
 };
 
 
 /**
  * @override
  * @suppress {checkTypes} actual parameter 2 of
- * cvox.Msgs.prototype.getMsg does not match formal parameter
+ * Msgs.prototype.getMsg does not match formal parameter
  * found   : Array<number>
  * required: (Array<string>|null|undefined)
  */
 cvox.TableShifter.prototype.getDescription = function(prevSel, sel) {
   var descs = this.currentWalker_.getDescription(prevSel, sel);
   if (descs.length > 0) {
     if (this.bumpedEdge_) {
       descs[0].pushEarcon(cvox.Earcon.WRAP_EDGE);
       this.bumpedEdge_ = false;
     }
     if (this.begin_) {
       var len = descs.length;
       var summaryText = this.currentWalker_.tt.summaryText();
       var locationInfo = this.currentWalker_.getLocationInfo(sel);
       if (locationInfo != null) {
         descs.push(new cvox.NavDescription({
-          context: cvox.ChromeVox.msgs.getMsg('table_location', locationInfo),
+          context: Msgs.getMsg('table_location', locationInfo),
           text: '',
           annotation: summaryText ? summaryText + ' ' : ''
         }));
       }
       if (this.currentWalker_.tt.isSpanned()) {
         descs.push(new cvox.NavDescription({
           text: '',
-          annotation: cvox.ChromeVox.msgs.getMsg('spanned')
+          annotation: Msgs.getMsg('spanned')
         }));
       }
       this.begin_ = false;
     }
   }
   return descs;
 };
 
 
 /**
@@ skipping 34 matching lines @@
  * @override
  */
 cvox.TableShifter.create = function(sel) {
   var ancestors = cvox.DomUtil.getAncestors(sel.start.node);
   if (cvox.DomPredicates.tablePredicate(ancestors) &&
       !cvox.DomPredicates.captionPredicate(ancestors)) {
     return new cvox.TableShifter();
   }
   return null;
 };