Enable <webview>.executeScript outside of Apps and Extensions [2]

extensions/browser/api/guest_view/web_view/web_view_internal_api.h

Index: extensions/browser/api/guest_view/web_view/web_view_internal_api.h
diff --git a/extensions/browser/api/guest_view/web_view/web_view_internal_api.h b/extensions/browser/api/guest_view/web_view/web_view_internal_api.h
index 37483df9e0a1c09c9b74057999f9cb005b590faa..cd23be2b80efd1365739b457e5f717dcae671d1b 100644
--- a/extensions/browser/api/guest_view/web_view/web_view_internal_api.h
+++ b/extensions/browser/api/guest_view/web_view/web_view_internal_api.h
@@ -54,6 +54,11 @@ class WebViewInternalExecuteCodeFunction
     : public extensions::ExecuteCodeFunction {
  public:
   WebViewInternalExecuteCodeFunction();
+  // Called when a file URL request is complete.
+  // Parameters:
+  // - whether the request is success.
+  // - If yes, the content of the file.
+  using WebUILoadFileCallback = base::Callback<void(bool, const std::string&)>;
 
  protected:
   ~WebViewInternalExecuteCodeFunction() override;
@@ -66,8 +71,15 @@ class WebViewInternalExecuteCodeFunction
   extensions::ScriptExecutor* GetScriptExecutor() final;
   bool IsWebView() const override;
   const GURL& GetWebViewSrc() const override;
+  bool LoadFile(const std::string& file) override;
 
  private:
+  class WebUIURLFetcher;
+
+  // Loads a file url on WebUI.
+  bool LoadFileForWebUI(const std::string& file_src,
+                        const WebUILoadFileCallback& callback);
+
   // Contains extension resource built from path of file which is
   // specified in JSON arguments.
   extensions::ExtensionResource resource_;
@@ -76,6 +88,8 @@ class WebViewInternalExecuteCodeFunction
 
   GURL guest_src_;
 
+  scoped_ptr<WebUIURLFetcher> url_fetcher_;
+
   DISALLOW_COPY_AND_ASSIGN(WebViewInternalExecuteCodeFunction);
 };