Site isolation metrics: Sniff the actual type of cross origin text/html

responses, and take access control headers into account.

Also, moved the actual logic of site isolation metrics into a separate file.

BUG=none
TEST=none


Review URL: http://codereview.chromium.org/1699028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46370 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 39 insertions, 0 deletions

diff --git a/webkit/glue/site_isolation_metrics.h b/webkit/glue/site_isolation_metrics.h
new file mode 100644
index 0000000..1148afb
--- /dev/null
+++ b/webkit/glue/site_isolation_metrics.h
@@ -0,0 +1,39 @@
+// Copyright (c) 2010 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.
+
+#ifndef WEBKIT_GLUE_SITE_ISOLATION_METRICS_H_
+#define WEBKIT_GLUE_SITE_ISOLATION_METRICS_H_
+
+#include "third_party/WebKit/WebKit/chromium/public/WebURLRequest.h"
+
+namespace WebKit {
+class WebFrame;
+class WebURL;
+class WebURLResponse;
+}
+
+namespace webkit_glue {
+
+// Metrics to check the feasability of blocking cross-site requests
+// a renderer shouldn't be making (in case we try to move cross-site frames
+// into their own process someday). We're erring on the side of counting more
+// mime-types then we strictly need (we'd only consider blocking cross-site
+// requests with types similar to HTML, XML, or JSON).
+class SiteIsolationMetrics {
+ public:
+  static void AddRequest(unsigned identifier,
+                         WebKit::WebURLRequest::TargetType target_type);
+  static void LogMimeTypeForCrossOriginRequest(
+      WebKit::WebFrame* frame,
+      unsigned identifier,
+      const WebKit::WebURLResponse& response);
+  static void SniffCrossOriginHTML(const WebKit::WebURL& response_url,
+                                   const char* data,
+                                   int len);
+  static void RemoveCompletedResponse(const WebKit::WebURL& response_url);
+};
+
+}  // namespace webkit_glue
+
+#endif  // WEBKIT_GLUE_SITE_ISOLATION_METRICS_H_