Adds extension APIs of events on changing volume.

chrome/common/chrome_notification_types.h

Index: chrome/common/chrome_notification_types.h
diff --git a/chrome/common/chrome_notification_types.h b/chrome/common/chrome_notification_types.h
index 4be8d5faf8ae6466992ca82e39c6242f6abcee0a..db95083ce7d0e050a118ae833ea51c6102c57133 100644
--- a/chrome/common/chrome_notification_types.h
+++ b/chrome/common/chrome_notification_types.h
@@ -626,6 +626,21 @@ enum {
   // Details will be an AccessibilityMenuInfo.
   NOTIFICATION_ACCESSIBILITY_MENU_CLOSED,
 
+  // Notification that a volume was up, for propagating

[dmazzoni, 2011/08/24 14:49:02]

Change to "Notification that the volume was increased, ..."

[yoshiki, 2011/08/29 09:16:16]

Done.

+  // to an accessibility extension.
+  // Details will be an AccessibilityVolumeInfo.
+  NOTIFICATION_ACCESSIBILITY_VOLUME_UP,
+
+  // Notification that a volume was down, for propagating

[dmazzoni, 2011/08/24 14:49:02]

Change to "Notification that the volume was decreased, ..."

[yoshiki, 2011/08/29 09:16:16]

This was replaced with NOTIFICATION_ACCESSIBILITY_VOLUME_CHANGED.

On 2011/08/24 14:49:02, Dominic Mazzoni wrote:

+  // to an accessibility extension.
+  // Details will be an AccessibilityVolumeInfo.
+  NOTIFICATION_ACCESSIBILITY_VOLUME_DOWN,
+
+  // Notification that a volume was muted, for propagating

[dmazzoni, 2011/08/24 14:49:02]

Change to "Notification that the volume was muted or unmuted, ..."

[yoshiki, 2011/08/29 09:16:16]

This was replaced with NOTIFICATION_ACCESSIBILITY_VOLUME_CHANGED.

On 2011/08/24 14:49:02, Dominic Mazzoni wrote:

+  // to an accessibility extension.
+  // Details will be an AccessibilityVolumeInfo.
+  NOTIFICATION_ACCESSIBILITY_VOLUME_MUTE,
+
   // Content Settings --------------------------------------------------------
 
   // Sent when content settings change. The source is a HostContentSettings