[Extensions Bindings] Request JS execution from messaging bindings

extensions/shell/renderer/shell_extensions_renderer_client.h

Index: extensions/shell/renderer/shell_extensions_renderer_client.h
diff --git a/extensions/shell/renderer/shell_extensions_renderer_client.h b/extensions/shell/renderer/shell_extensions_renderer_client.h
index aa72353fe73bef969c111fe8fb3886c71925d026..4f10054444f35307e7ec87430a1225998513413b 100644
--- a/extensions/shell/renderer/shell_extensions_renderer_client.h
+++ b/extensions/shell/renderer/shell_extensions_renderer_client.h
@@ -5,10 +5,14 @@
 #ifndef EXTENSIONS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_
 #define EXTENSIONS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_
 
+#include <memory>
+
 #include "base/macros.h"
 #include "extensions/renderer/extensions_renderer_client.h"
 
 namespace extensions {
+class Dispatcher;
+class DispatcherDelegate;
 
 class ShellExtensionsRendererClient : public ExtensionsRendererClient {
  public:
@@ -18,8 +22,12 @@ class ShellExtensionsRendererClient : public ExtensionsRendererClient {
   // ExtensionsRendererClient implementation.
   bool IsIncognitoProcess() const override;
   int GetLowestIsolatedWorldId() const override;
+  Dispatcher* GetDispatcher() override;
 
  private:
+  std::unique_ptr<DispatcherDelegate> dispatcher_delegate_;
+  std::unique_ptr<Dispatcher> dispatcher_;
+
   DISALLOW_COPY_AND_ASSIGN(ShellExtensionsRendererClient);
 };