Integrate external mount points to IsolatedContext

webkit/fileapi/file_system_mount_point_provider.h

Index: webkit/fileapi/file_system_mount_point_provider.h
diff --git a/webkit/fileapi/file_system_mount_point_provider.h b/webkit/fileapi/file_system_mount_point_provider.h
index fbc7b58d475eec53f9647b5e76bcf0271e038f28..6d9c8da15beb162e114d0428e40f5d9dc683b4b1 100644
--- a/webkit/fileapi/file_system_mount_point_provider.h
+++ b/webkit/fileapi/file_system_mount_point_provider.h
@@ -122,18 +122,24 @@ class FILEAPI_EXPORT FileSystemMountPointProvider {
 class ExternalFileSystemMountPointProvider
     : public FileSystemMountPointProvider {
  public:
-  // Returns the list of top level directories that are exposed by this
-  // provider. This list is used to set appropriate child process file access
-  // permissions.
-  virtual std::vector<FilePath> GetRootDirectories() const = 0;
-  // Grant access to all external file system from extension identified with
+  // A struct used to represent an external mount point.
+  struct MountInfo {
+    std::string mount_name;
+    FilePath root_path;
+  };
+
+  // Returns the list of mount names and associated directories that are
+  // exposed by this provider. This list is used to set appropriate child
+  // process file access permissions.
+  virtual std::vector<MountInfo> GetMountPoints() const = 0;
+  // Grants access to all external file system from extension identified with
   // |extension_id|.
   virtual void GrantFullAccessToExtension(const std::string& extension_id) = 0;
   // Grants access to |virtual_path| from |origin_url|.
   virtual void GrantFileAccessToExtension(
       const std::string& extension_id,
       const FilePath& virtual_path) = 0;
-  // Revoke file access from extension identified with |extension_id|.
+  // Revokes file access from extension identified with |extension_id|.
   virtual void RevokeAccessForExtension(
         const std::string& extension_id) = 0;
   // Checks if a given |mount_point| already exists.
@@ -144,7 +150,7 @@ class ExternalFileSystemMountPointProvider
   virtual void AddRemoteMountPoint(
       const FilePath& mount_point,
       RemoteFileSystemProxyInterface* remote_proxy) = 0;
-  // Remove a mount point.
+  // Removes a mount point.
   virtual void RemoveMountPoint(const FilePath& mount_point) = 0;
   // Gets virtual path by known filesystem path. Returns false when filesystem
   // path is not exposed by this provider.