Add domain request detection to incident reporting service.

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.
 //
 // Client side phishing and malware detection request and response
 // protocol buffers.  Those protocol messages should be kept in sync
 // with the server implementation.
 //
 // If you want to change this protocol definition or you have questions
 // regarding its format please contact chrome-anti-phishing@googlegroups.com.
@@ skipping 353 matching lines @@
       optional ClientDownloadRequest.SignatureInfo signature = 5;
       optional ClientDownloadRequest.ImageHeaders image_headers = 6;
     }
     message VariationsSeedSignatureIncident {
       optional string variations_seed_signature = 1;
     }
     message ScriptRequestIncident {
       optional string script_digest = 1;
       optional string inclusion_origin = 2;
     }
+    message DomainRequestIncident {

[grt (UTC plus 2), 2015/03/20 20:50:04]

This new type is so similar to the existing one, that I think it makes sense to
generalize the existing one a bit. With the wonder of protobufs, we can change
ScriptRequestIncident to:

  message ResourceIncident {
    enum Type {
      SCRIPT = 0;
      DOMAIN = 1;
    }
    optional string digest = 1;
    optional string origin = 2;
    optional Type type = 3;
  }

and update the various class and method names accordingly.

[grt (UTC plus 2), 2015/03/21 01:30:07]

I just remembered that enums in protobufs must start with an "unknown" value for
the sake of extensibility, so make that:

enum Type {
  UNKNOWN = 0;
  SCRIPT = 1;
  DOMAIN = 2;
}

[romanl, 2015/03/26 22:01:47]

Done.

[romanl, 2015/03/26 22:01:47]

Done.

+      optional string domain_digest = 1;
+      optional string request_origin = 2;
+    }
     optional int64 incident_time_msec = 1;
     optional TrackedPreferenceIncident tracked_preference = 2;
     optional BinaryIntegrityIncident binary_integrity = 3;
     optional BlacklistLoadIncident blacklist_load = 4;
     // Note: skip tag 5 because it was previously used.
     optional VariationsSeedSignatureIncident variations_seed_signature = 6;
     optional ScriptRequestIncident script_request = 7;
+    optional DomainRequestIncident domain_request = 8;
   }
 
   repeated IncidentData incident = 1;
 
   message DownloadDetails {
     optional bytes token = 1;
     optional ClientDownloadRequest download = 2;
     optional int64 download_time_msec = 3;
     optional int64 open_time_msec = 4;
   }
@@ skipping 72 matching lines @@
   message EnvironmentRequest { optional int32 dll_index = 1; }
 
   repeated EnvironmentRequest environment_requests = 3;
 }
 
 message DownloadMetadata {
   optional uint32 download_id = 1;
 
   optional ClientIncidentReport.DownloadDetails download = 2;
 }