file_manager: Remove MountEvent and VolumeInfo types from private API

These types are no longer used.

BUG=257916
TEST=none
R=benwells@chromium.org, hidehiko@chromium.org

Review URL: https://codereview.chromium.org/23882004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221986 0039d316-1c4b-4281-b951-d872f2087c98

chrome/common/extensions/api/file_browser_private.json

@@ -34,38 +34,6 @@
           }
         }
       },
-      {
-        "id": "VolumeInfo",
-        "type": "object",
-        "description": "Mounted disk volume information.",
-        "properties": {
-          "mountPath": {
-            "type": "string",
-            "description": "Disk volume mount point path. The value corresponds to its Entry.fullPath in File API."
-          },
-          "devicePath": {
-            "type": "string",
-            "description": "Disk volume device path."
-          },
-          "label": {
-            "type": "string",
-            "description": "Volume label."
-          },
-          "deviceType": {
-            "type": "string",
-            "enum": ["sd", "usb", "optical", "mobile", "unknown"],
-            "description": "Device type."
-          },
-          "readOnly": {
-            "type": "boolean",
-            "description": "Flag that specifies if volume is mounted in read-only mode."
-          },
-          "totalSize": {
-            "type": "number",
-            "description": "Approximated total disk volume size in bytes."
-          }
-        }
-      },
       {
         "id": "DriveEntryProperties",
         "type": "object",
@@ -221,22 +189,6 @@
           }
         }
       },
-      {
-        "id": "MountEvent",
-        "type": "object",
-        "description": "Payload data for disk mount / unmount event.",
-        "properties": {
-          "eventType": {
-            "type": "string",
-            "enum": ["added", "removed"],
-            "description": "Event type that tells listeners which disk volume even was raised."
-          },
-          "volumeInfo": {
-            "$ref": "VolumeInfo",
-            "description":"Volume information that this mount event applies to."
-          }
-        }
-      },
       {
         "id": "MountCompletedEvent",
         "type": "object",