Be more lenient about inspecting/pinging on invalid downloaded .zip's

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 257 matching lines @@
   // extensions that get downloaded by users.
   enum DownloadType {
     WIN_EXECUTABLE = 0;    // Currently all .exe, .cab and .msi files.
     CHROME_EXTENSION = 1;  // .crx files.
     ANDROID_APK = 2;       // .apk files.
     // .zip files containing one of the other executable types.
     ZIPPED_EXECUTABLE = 3;
     MAC_EXECUTABLE = 4;  // .dmg, .pkg, etc.
     ZIPPED_ARCHIVE = 5;  // .zip file containing another archive.
     ARCHIVE = 6;         // Archive that doesn't have a specific DownloadType.
+    // A .zip that Chrome failed to unpack to the point of finding exe/zips.
+    INVALID_ZIP = 7;
+    // A .dmg, .pkg, etc, that Chrome failed to unpack to the point of finding
+    // Mach O's.
+    INVALID_MAC_ARCHIVE = 8;
   }
   optional DownloadType download_type = 10 [default = WIN_EXECUTABLE];
 
   // Locale of the device, eg en, en_US.
   optional string locale = 11;
 
   message PEImageHeaders {
     // IMAGE_DOS_HEADER.
     optional bytes dos_header = 1;
     // IMAGE_FILE_HEADER.
@@ skipping 55 matching lines @@
     optional Digests digests = 3;
     optional int64 length = 4;
     optional SignatureInfo signature = 5;
     optional ImageHeaders image_headers = 6;
   }
 
   repeated ArchivedBinary archived_binary = 22;
 
   // Population that the reporting user is part of.
   optional ChromeUserPopulation population = 24;
+
+  // True if the .zip or DMG, etc, was 100% successfully unpacked.
+  optional bool archive_valid = 26;
 }
 
 message ClientDownloadResponse {
   enum Verdict {
     // Download is considered safe.
     SAFE = 0;
     // Download is considered dangerous.  Chrome should show a warning to the
     // user.
     DANGEROUS = 1;
     // Download is unknown.  Chrome should display a less severe warning.
@@ skipping 376 matching lines @@
   // The ASN and country of the client IP. These fields are filled up by
   // csd_frontend
   repeated string client_asn = 6;
   optional string client_country = 7;
 
   // Whether user chose to proceed.
   optional bool did_proceed = 8;
 
   // Whether user visited this origin before.
   optional bool repeat_visit = 9;
-}
+}