PS - Adjusting webRequest API for use in Public Sessions

extensions/browser/api/web_request/web_request_event_details.cc

 // Copyright 2016 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 "extensions/browser/api/web_request/web_request_event_details.h"
 
 #include "base/callback.h"
 #include "base/strings/string_number_conversions.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_frame_host.h"
@@ skipping 180 matching lines @@
   return result;
 }
 
 std::unique_ptr<base::DictionaryValue>
 WebRequestEventDetails::GetAndClearDict() {
   std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue);
   dict_.Swap(result.get());
   return result;
 }
 
+void WebRequestEventDetails::FilterForPublicSession() {
+  request_body_ = nullptr;
+  request_headers_ = nullptr;
+  response_headers_ = nullptr;
+
+  extra_info_spec_ = 0;
+
+  static const char* const kSafeAttributes[] = {
+    "method", "requestId", "timeStamp", "type", "tabId", "frameId",
+    "parentFrameId", "fromCache", "error", "ip", "statusLine", "statusCode"
+  };
+
+  auto copy = GetAndClearDict();
+
+  for (const char* safe_attr : kSafeAttributes) {
+    std::unique_ptr<base::Value> val;
+    if (copy->Remove(safe_attr, &val))
+      dict_.Set(safe_attr, std::move(val));
+  }
+
+  // URL is stripped down to the origin.
+  std::string url;
+  copy->GetString(keys::kUrlKey, &url);
+  GURL gurl(url);
+  dict_.SetString(keys::kUrlKey, gurl.GetOrigin().spec());
+}
+
+WebRequestEventDetails::WebRequestEventDetails()
+    : extra_info_spec_(0), render_process_id_(0), render_frame_id_(0) {}
+
 void WebRequestEventDetails::OnDeterminedFrameData(
     std::unique_ptr<WebRequestEventDetails> self,
     const DeterminedFrameDataCallback& callback,
     const ExtensionApiFrameIdMap::FrameData& frame_data) {
   SetFrameData(frame_data);
   callback.Run(std::move(self));
 }
 
 }  // namespace extensions