Remove ChromeV8Extension & most of ChromeV8Context

chrome/renderer/extensions/file_browser_handler_custom_bindings.h

Index: chrome/renderer/extensions/file_browser_handler_custom_bindings.h
diff --git a/chrome/renderer/extensions/file_browser_handler_custom_bindings.h b/chrome/renderer/extensions/file_browser_handler_custom_bindings.h
index b7fe20372ff656541daf632e44e910fd00e53e4e..07a14e3e56f305e25bea397a551f515a421f0cfe 100644
--- a/chrome/renderer/extensions/file_browser_handler_custom_bindings.h
+++ b/chrome/renderer/extensions/file_browser_handler_custom_bindings.h
@@ -6,15 +6,14 @@
 #define CHROME_RENDERER_EXTENSIONS_FILE_BROWSER_HANDLER_CUSTOM_BINDINGS_H_
 
 #include "base/compiler_specific.h"
-#include "chrome/renderer/extensions/chrome_v8_extension.h"
+#include "extensions/renderer/object_backed_native_handler.h"
 
 namespace extensions {
 
 // Custom bindings for the fileBrowserHandler API.
-class FileBrowserHandlerCustomBindings : public ChromeV8Extension {
+class FileBrowserHandlerCustomBindings : public ObjectBackedNativeHandler {
  public:
-  FileBrowserHandlerCustomBindings(Dispatcher* dispatcher,
-                                   ChromeV8Context* context);
+  explicit FileBrowserHandlerCustomBindings(ScriptContext* context);
 
  private:
   void GetExternalFileEntry(const v8::FunctionCallbackInfo<v8::Value>& args);