Extension/Platform App window isolation

chrome/browser/ui/extensions/shell_window.cc

Index: chrome/browser/ui/extensions/shell_window.cc
diff --git a/chrome/browser/ui/extensions/shell_window.cc b/chrome/browser/ui/extensions/shell_window.cc
index ff7881de4aac72bb417aeeb8e0a6cf8354d9c246..56b762ea3ce9ec5a68f61b23ff91517b9abbad34 100644
--- a/chrome/browser/ui/extensions/shell_window.cc
+++ b/chrome/browser/ui/extensions/shell_window.cc
@@ -46,6 +46,9 @@ class ShellWindowController : public ExtensionWindowController {
   virtual void SetFullscreenMode(bool is_fullscreen,
                                  const GURL& extension_url) const OVERRIDE;
 
+ protected:
+  virtual bool IsVisibleToExtension(const Extension* extension) const OVERRIDE;
+
  private:
   ShellWindow* shell_window_;
 
@@ -81,6 +84,11 @@ void ShellWindowController::SetFullscreenMode(bool is_fullscreen,
   // TODO(mihaip): implement
 }
 
+bool ShellWindowController::IsVisibleToExtension(const Extension* extension)
+    const {
+  return shell_window_->extension() == extension;
+}
+
 }  // namespace internal
 
 ShellWindow* ShellWindow::Create(Profile* profile,