Allow ChromeOS file selection dialog to be shown from shell windows.

chrome/browser/ui/views/select_file_dialog_extension.h

Index: chrome/browser/ui/views/select_file_dialog_extension.h
diff --git a/chrome/browser/ui/views/select_file_dialog_extension.h b/chrome/browser/ui/views/select_file_dialog_extension.h
index eb91b0dcf8c898007ec6f8173950311a890fb88c..147648d0e0ebe6c2a117c23cc12158aff9c8dae8 100644
--- a/chrome/browser/ui/views/select_file_dialog_extension.h
+++ b/chrome/browser/ui/views/select_file_dialog_extension.h
@@ -14,8 +14,8 @@
 #include "chrome/browser/ui/views/extensions/extension_dialog_observer.h"
 #include "ui/gfx/native_widget_types.h"  // gfx::NativeWindow
 
-class Browser;
 class ExtensionDialog;
+class Profile;
 
 namespace content {
 class RenderViewHost;
@@ -89,13 +89,15 @@ class SelectFileDialogExtension
   // Host for the extension that implements this dialog.
   scoped_refptr<ExtensionDialog> extension_dialog_;
 
-  // ID of the tab that spawned this dialog, used to route callbacks.
+  // ID of the tab that spawned this dialog, used to route callbacks. If the
+  // dialog is not associated with any browser it will be shown full screen,
+  // with the tab_id set to 0.
   int32 tab_id_;
 
-  // Cache a pointer to our owner browser. Since we're a child window of our
-  // owner browser, if this browser gets deleted, it will also close us.
-  Browser* owner_browser_;
+  // Pointer to the profile the dialog is running in.
+  Profile* profile_;
 
+  // The window that created the dialog.
   gfx::NativeWindow owner_window_;
 
   // We defer the callback into SelectFileDialog::Listener until the window