Add accessibility support for reading date and time on ash tray.

ash/system/date/date_view.cc

 // Copyright (c) 2012 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.
 
 #include "ash/system/date/date_view.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/tray_constants.h"
 #include "base/i18n/time_formatting.h"
@@ skipping 118 matching lines @@
 
 DateView::~DateView() {
 }
 
 void DateView::SetActionable(bool actionable) {
   actionable_ = actionable;
   set_focusable(actionable_);
 }
 
 void DateView::UpdateTextInternal(const base::Time& now) {
+  SetAccessibleName(
+      base::TimeFormatFriendlyDate(now) +
+      ASCIIToUTF16(",") +
+      base::TimeFormatTimeOfDayWithHourClockType(
+          now, base::k12HourClock, base:: kKeepAmPm));

[Jun Mukai, 2013/02/12 01:04:03]

Is there some reason to be comma-separated rather than IDS_ASH_STATUS_TRAY_DATE?
Sometimes people want to hear in their native language?
# I don't know which is better actually, probably good to ask dmazzoni

[jennyz, 2013/02/12 01:07:38]

IDS_ASH_STATUS_TRAY_DATE has the week in short format, like "Mon", "Fri", our
a11y system does not read it correctly. So I would like to use a longer format.
I add a "," in between date and time, so that the a11y will has a little pause.
Otherwise, it reads like "Friday, Feburary 11, 20014:00 pm".

[Jun Mukai, 2013/02/12 01:15:05]

ah, that makes sense. thanks!

   date_label_->SetText(
       l10n_util::GetStringFUTF16(
           IDS_ASH_STATUS_TRAY_DATE, FormatDayOfWeek(now), FormatDate(now)));
 }
 
 bool DateView::PerformAction(const ui::Event& event) {
   if (!actionable_)
     return false;
 
   ash::Shell::GetInstance()->system_tray_delegate()->ShowDateSettings();
@@ skipping 127 matching lines @@
 void TimeView::SetupLabel(views::Label* label) {
   label->set_owned_by_client();
   SetupLabelForTray(label);
   gfx::Font font = label->font();
   label->SetFont(font.DeriveFont(0, font.GetStyle() & ~gfx::Font::BOLD));
 }
 
 }  // namespace tray
 }  // namespace internal
 }  // namespace ash