Support file system access in DevTools with isolated file system.

content/public/browser/devtools_frontend_host_delegate.h

Index: content/public/browser/devtools_frontend_host_delegate.h
diff --git a/content/public/browser/devtools_frontend_host_delegate.h b/content/public/browser/devtools_frontend_host_delegate.h
index 79d3d9f6d8cf7ddf5bc137d82d361dc1d5ef200e..54fb53eecc378d5ad0c9a227ae79369615cf87dd 100644
--- a/content/public/browser/devtools_frontend_host_delegate.h
+++ b/content/public/browser/devtools_frontend_host_delegate.h
@@ -42,6 +42,15 @@ class DevToolsFrontendHostDelegate {
   virtual void AppendToFile(const std::string& url,
                             const std::string& content) = 0;
 
+  // Requests the list of file systems added for devtools previously.

[Tom Sepez, 2013/01/11 18:34:17]

nit: Requests the list of filesystems previously added for devtools.

+  virtual void RequestFileSystems() = 0;
+
+  // Shows a dialog to select a folder to add an isolated file system for.

[Tom Sepez, 2013/01/11 18:34:17]

nit: Shows a dialog to select a folder to which an isolated filesystem is added.

+  virtual void AddFileSystem() = 0;
+
+  // Removes previously added devtools file system by given |file_system_path|.

[Tom Sepez, 2013/01/11 18:34:17]

nit: Removes a previously added devtools filesystem given by |file_system_path|.

+  virtual void RemoveFileSystem(const std::string& file_system_path) = 0;

[Tom Sepez, 2013/01/11 18:34:17]

nit: Removes a previously added devtools filesystem given by |file_system_path|.

+
   // This method is called when the contents inspected by this devtools frontend
   // is closing.
   virtual void InspectedContentsClosing() = 0;