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

extensions/browser/api/guest_view/web_view/web_view_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 EXTENSIONS_BROWSER_API_WEB_VIEW_WEB_VIEW_INTERNAL_API_H_
 #define EXTENSIONS_BROWSER_API_WEB_VIEW_WEB_VIEW_INTERNAL_API_H_
 
 #include "extensions/browser/api/capture_web_contents_function.h"
 #include "extensions/browser/api/execute_code_function.h"
 #include "extensions/browser/extension_function.h"
@@ skipping 36 matching lines @@
   // WebViewInternalExtensionFunction implementation.
   bool RunAsyncSafe(WebViewGuest* guest) override;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewInternalNavigateFunction);
 };
 
 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;
 
   // Initialize |details_| if it hasn't already been.
   bool Init() override;
   bool ShouldInsertCSS() const override;
   bool CanExecuteScriptOnPage() override;
   // Guarded by a process ID check.
   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_;
 
   int guest_instance_id_;
 
   GURL guest_src_;
 
+  scoped_ptr<WebUIURLFetcher> url_fetcher_;
+
   DISALLOW_COPY_AND_ASSIGN(WebViewInternalExecuteCodeFunction);
 };
 
 class WebViewInternalExecuteScriptFunction
     : public WebViewInternalExecuteCodeFunction {
  public:
   WebViewInternalExecuteScriptFunction();
 
  protected:
   ~WebViewInternalExecuteScriptFunction() override {}
@@ skipping 288 matching lines @@
   uint32 remove_mask_;
   // Tracks any data related or parse errors.
   bool bad_message_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewInternalClearDataFunction);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEB_VIEW_WEB_VIEW_INTERNAL_API_H_