Added flag that enables system sounds whether ChromeVox is enabled or not.

BUG=322820
TEST=manual tests on Lumpy

Review URL: https://codereview.chromium.org/105573008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244844 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 58 insertions, 0 deletions

diff --git a/ash/audio/sounds.cc b/ash/audio/sounds.cc
new file mode 100644
index 0000000..dd521b7
--- /dev/null
+++ b/ash/audio/sounds.cc
@@ -0,0 +1,30 @@
+// 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.
+
+#include "ash/audio/sounds.h"
+
+#include "ash/accessibility_delegate.h"
+#include "ash/ash_switches.h"
+#include "ash/shell.h"
+#include "base/command_line.h"
+
+using media::SoundsManager;
+
+namespace ash {
+
+bool PlaySystemSound(SoundsManager::SoundKey key, bool honor_spoken_feedback) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAshEnableSystemSounds)) {
+    return SoundsManager::Get()->Play(key);
+  }
+
+  if (honor_spoken_feedback &&
+      !Shell::GetInstance()->accessibility_delegate()->
+      IsSpokenFeedbackEnabled()) {
+    return false;
+  }
+  return SoundsManager::Get()->Play(key);
+}
+
+}  // namespace ash
diff --git a/ash/audio/sounds.h b/ash/audio/sounds.h
new file mode 100644
index 0000000..6c641c0
--- /dev/null
+++ b/ash/audio/sounds.h
@@ -0,0 +1,28 @@
+// 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.
+
+#ifndef ASH_AUDIO_SOUNDS_H_
+#define ASH_AUDIO_SOUNDS_H_
+
+#include "ash/ash_export.h"
+#include "media/audio/sounds/sounds_manager.h"
+
+namespace ash {
+
+// A wrapper around media::SoundsManager::Play() method, which plays
+// sound identified by |key| iff at least one of the following
+// conditions is true:
+// * ash::switches::kAshEnableSystemSounds flag is set
+// * |honor_spoken_feedback| is true and spoken feedback is enabled
+// * ash::switches::kAshEnableSystemSounds is not set and
+//   |honor_spoken_feedback| is false
+//
+// Currently the latter case is applied for startup sound at OOBE screen
+// and ChromeVox enable/disable sounds.
+ASH_EXPORT bool PlaySystemSound(media::SoundsManager::SoundKey key,
+                                bool honor_spoken_feedback);
+
+}  // namespace ash
+
+#endif  // ASH_AUDIO_SOUNDS_H_