Extensions: Add metrics for Web Request API actions.

extensions/browser/api/web_request/web_request_api_helpers.h

Index: extensions/browser/api/web_request/web_request_api_helpers.h
diff --git a/extensions/browser/api/web_request/web_request_api_helpers.h b/extensions/browser/api/web_request/web_request_api_helpers.h
index fae87e724ae8931d27dbd89c23cae47e6b006112..18d47cba0df280bb1e5a9f1bc05b4cdfa14e2378 100644
--- a/extensions/browser/api/web_request/web_request_api_helpers.h
+++ b/extensions/browser/api/web_request/web_request_api_helpers.h
@@ -273,41 +273,61 @@ void MergeOnBeforeRequestResponses(
 // Modifies the "Cookie" header in |request_headers| according to
 // |deltas.request_cookie_modifications|. Conflicts are currently ignored
 // silently.
+// Stores in |request_cookies_modified| whether the request cookies were
+// modified.
 void MergeCookiesInOnBeforeSendHeadersResponses(
     const EventResponseDeltas& deltas,
     net::HttpRequestHeaders* request_headers,
     extensions::WarningSet* conflicting_extensions,
-    const net::NetLogWithSource* net_log);
+    const net::NetLogWithSource* net_log,
+    bool* request_cookies_modified);
+
 // Modifies the headers in |request_headers| according to |deltas|. Conflicts
 // are tried to be resolved.
+// Stores in |request_headers_modified| whether the request headers (excluding
+// the cookie header) were modified.
+// Stores in |request_cookies_modified| whether the request cookies 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,
+    bool* request_cookies_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.
+// Stores in |response_cookies_modified| whether the response cookies were
+// modified.
 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);
+    const net::NetLogWithSource* net_log,
+    bool* response_cookies_modified);
 // 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 (excluding
+// the cookie header) were modified.
+// Stores in |response_cookies_modified| whether the response cookies were
+// modified.
 void MergeOnHeadersReceivedResponses(
     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,
+    bool* response_cookies_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