Extensions: Add metrics for Web Request API actions.

extensions/browser/api/web_request/web_request_api_helpers.h

 // Copyright (c) 2012 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.
 
 // Helper classes and functions used for the WebRequest API.
 
 #ifndef EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_API_HELPERS_H_
 #define EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_API_HELPERS_H_
 
 #include <list>
@@ skipping 263 matching lines @@
 // Modifies the "Cookie" header in |request_headers| according to
 // |deltas.request_cookie_modifications|. Conflicts are currently ignored
 // silently.
 void MergeCookiesInOnBeforeSendHeadersResponses(
     const EventResponseDeltas& deltas,
     net::HttpRequestHeaders* request_headers,
     extensions::WarningSet* conflicting_extensions,
     const net::NetLogWithSource* net_log);
 // Modifies the headers in |request_headers| according to |deltas|. Conflicts
 // are tried to be resolved.
+// Stores in |request_headers_modified| whether the request headers were
+// modified.
 void MergeOnBeforeSendHeadersResponses(
     const EventResponseDeltas& deltas,
     net::HttpRequestHeaders* request_headers,
     extensions::WarningSet* conflicting_extensions,
-    const net::NetLogWithSource* net_log);
+    const net::NetLogWithSource* net_log,
+    bool* request_headers_modified);
 // Modifies the "Set-Cookie" headers in |override_response_headers| according to
 // |deltas.response_cookie_modifications|. If |override_response_headers| is
 // NULL, a copy of |original_response_headers| is created. Conflicts are
 // currently ignored silently.
 void MergeCookiesInOnHeadersReceivedResponses(
     const EventResponseDeltas& deltas,
     const net::HttpResponseHeaders* original_response_headers,
     scoped_refptr<net::HttpResponseHeaders>* override_response_headers,
     extensions::WarningSet* conflicting_extensions,
     const net::NetLogWithSource* net_log);
 // Stores a copy of |original_response_header| into |override_response_headers|
 // that is modified according to |deltas|. If |deltas| does not instruct to
 // modify the response headers, |override_response_headers| remains empty.
 // Extension-initiated redirects are written to |override_response_headers|
 // (to request redirection) and |*allowed_unsafe_redirect_url| (to make sure
 // that the request is not cancelled with net::ERR_UNSAFE_REDIRECT).
+// Stores in |response_headers_modified| whether the response headers were
+// modified.
 void MergeOnHeadersReceivedResponses(
     const GURL& url,
     const EventResponseDeltas& deltas,
     const net::HttpResponseHeaders* original_response_headers,
     scoped_refptr<net::HttpResponseHeaders>* override_response_headers,
     GURL* allowed_unsafe_redirect_url,
     extensions::WarningSet* conflicting_extensions,
-    const net::NetLogWithSource* net_log);
+    const net::NetLogWithSource* net_log,
+    bool* response_headers_modified);
 // Merge the responses of blocked onAuthRequired handlers. The first
 // registered listener that supplies authentication credentials in a response,
 // if any, will have its authentication credentials used. |request| must be
 // non-NULL, and contain |deltas| that are sorted in decreasing order of
 // precedence.
 // Returns whether authentication credentials are set.
 bool MergeOnAuthRequiredResponses(
     const EventResponseDeltas& deltas,
     net::AuthCredentials* auth_credentials,
     extensions::WarningSet* conflicting_extensions,
     const net::NetLogWithSource* net_log);
 
 // Triggers clearing each renderer's in-memory cache the next time it navigates.
 void ClearCacheOnNavigation();
 
 // Converts the |name|, |value| pair of a http header to a HttpHeaders
 // dictionary.
 std::unique_ptr<base::DictionaryValue> CreateHeaderDictionary(
     const std::string& name,
     const std::string& value);
 
 }  // namespace extension_web_request_api_helpers
 
 #endif  // EXTENSIONS_BROWSER_API_WEB_REQUEST_WEB_REQUEST_API_HELPERS_H_