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

chrome/browser/extensions/url_request_util.cc

 // 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.
 
 #include "chrome/browser/extensions/url_request_util.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 221 matching lines @@
                                              network_delegate,
                                              relative_path,
                                              resource_id,
                                              content_security_policy,
                                              send_cors_header);
     }
   }
   return NULL;
 }
 
+bool IsWebViewRequest(net::URLRequest* request) {
+  const content::ResourceRequestInfo* info =
+      content::ResourceRequestInfo::ForRequest(request);
+  ExtensionRendererState* renderer_state =
+      ExtensionRendererState::GetInstance();
+  ExtensionRendererState::WebViewInfo webview_info;
+  return renderer_state->GetWebViewInfo(
+      info->GetChildID(), info->GetRouteID(), &webview_info);
+}
+
 }  // namespace url_request_util
 }  // namespace extensions