Submit a sample of notification images to Safe Browsing

chrome/common/safe_browsing/csd.proto

 // 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.
 //
 // This proto file includes:
 // (1) Client side phishing and malware detection request and response
 //   protocol buffers.  Those protocol messages should be kept in sync
 //   with the server implementation.
 //
 // (2) Safe Browsing reporting protocol buffers.
@@ skipping 817 matching lines @@
   optional bool did_proceed = 8;
 
   // Whether user visited this origin before.
   optional bool repeat_visit = 9;
 
   // The same token in ClientDownloadResponse. This field is only set if its
   // report type is DANGEROUS_DOWNLOAD_RECOVERY, DANGEROUS_DOWNLOAD_WARNING or
   // DANGEROUS_DOWNLOAD_BY_API.
   optional bytes token = 15;
 }
+
+// Canonical representation of raster image data.
+message ImageData {
+  // Image bitmap encoded as PNG, after downscaling to <= 512x512.
+  optional bytes png_data = 1;
+
+  message Dimensions {
+    optional int32 width = 1;
+    optional int32 height = 2;
+  }
+
+  optional Dimensions dimensions = 2;
+  optional Dimensions original_dimensions = 3;  // iff downscaled
+}
+
+// Reporting protobuf for an image served as part of a browser notification.
+// There is no response (an empty body) to this request.
+message NotificationImageReportRequest {
+  optional string notification_origin = 1;  // Src-origin of the notification.
+  optional ImageData image = 2;             // The bitmap of the image.
+
+  // Note that the image URL is deliberately omitted as it would be untrusted,
+  // since the notification image fetch may be intercepted by a Service Worker
+  // (even if the image URL is cross-origin). Otherwise a website could mislead
+  // Safe Browsing into associating phishing image bitmaps with safe image URLs.
+}