Use default CSP for resource loading in webview (instead of platform app's CSP)

chrome/browser/extensions/chrome_extensions_browser_client.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/extensions/chrome_extensions_browser_client.h"
 
 #include "apps/common/api/generated_api.h"
 #include "base/command_line.h"
 #include "base/version.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
@@ skipping 95 matching lines @@
       || util::IsIncognitoEnabled(extension_id, context);
 }
 
 bool ChromeExtensionsBrowserClient::CanExtensionCrossIncognito(
     const extensions::Extension* extension,
     content::BrowserContext* context) const {
   return IsGuestSession(context)
       || util::CanCrossIncognito(extension, context);
 }
 
+bool ChromeExtensionsBrowserClient::IsWebViewRequest(
+    net::URLRequest* request) const {
+  return url_request_util::IsWebViewRequest(request);
+}
+
 net::URLRequestJob*
 ChromeExtensionsBrowserClient::MaybeCreateResourceBundleRequestJob(
     net::URLRequest* request,
     net::NetworkDelegate* network_delegate,
     const base::FilePath& directory_path,
     const std::string& content_security_policy,
     bool send_cors_header) {
   return url_request_util::MaybeCreateURLRequestResourceBundleJob(
       request,
       network_delegate,
@@ skipping 132 matching lines @@
   // Generated APIs from lower-level modules.
   extensions::core_api::GeneratedFunctionRegistry::RegisterAll(registry);
   apps::api::GeneratedFunctionRegistry::RegisterAll(registry);
 
   // Generated APIs from Chrome.
   extensions::api::GeneratedFunctionRegistry::RegisterAll(registry);
 #endif
 }
 
 }  // namespace extensions