Implement automatic load of composed/embedded automation trees

chrome/browser/extensions/api/automation_internal/automation_internal_api.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_AUTOMATION_INTERNAL_AUTOMATION_INTERNAL_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_AUTOMATION_INTERNAL_AUTOMATION_INTERNAL_API_H_
 
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ skipping 40 matching lines @@
 
   ExtensionFunction::ResponseAction Run() override;
 
  private:
   // Helper function to route an action to an action adapter.
   ExtensionFunction::ResponseAction RouteActionToAdapter(
       api::automation_internal::PerformAction::Params* params,
       AutomationActionAdapter* adapter);
 };
 
+class AutomationInternalEnableRendererFunction
+    : public UIThreadExtensionFunction {
+  DECLARE_EXTENSION_FUNCTION("automationInternal.enableRenderer",

[dmazzoni, 2014/10/29 06:53:30]

How about enableFrame or enableWebFrame? Renderer is a bit of an overloaded term
in the Chromium codebase, it doesn't feel very precise.

+                             AUTOMATIONINTERNAL_PERFORMACTION)
+ protected:
+  ~AutomationInternalEnableRendererFunction() override {}
+
+  ExtensionFunction::ResponseAction Run() override;
+};
+
 class AutomationInternalEnableDesktopFunction
     : public UIThreadExtensionFunction {
   DECLARE_EXTENSION_FUNCTION("automationInternal.enableDesktop",
                              AUTOMATIONINTERNAL_ENABLEDESKTOP)
  protected:
   ~AutomationInternalEnableDesktopFunction() override {}
 
   ResponseAction Run() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_AUTOMATION_INTERNAL_AUTOMATION_INTERNAL_API_H_