Safebrowsing: Honor the metadata from malware fullhash results in SB API 3.0.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index c85805bc42af635b9dc05b270399a57509d068fb..cffb6a49cffbed54090c32628bfb4fe6353e5a99 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -3073,6 +3073,7 @@
           'sources': [ '<@(chrome_browser_basic_safe_browsing_sources)' ],
           'dependencies': [
             'safe_browsing_chunk_proto',
+            'safe_browsing_metadata_proto',
             'safe_browsing_report_proto',
           ],
           'conditions': [
@@ -3429,6 +3430,19 @@
       'includes': [ '../build/protoc.gypi' ]
     },
     {
+      # Protobuf compiler / generator for the safebrowsing full hash metadata
+      # protocol buffer.
+      # GN version: //chrome/browser/safe_browsing:metadata_proto
+      'target_name': 'safe_browsing_metadata_proto',
+      'type': 'static_library',
+      'sources': [ 'browser/safe_browsing/metadata.proto' ],
+      'variables': {
+        'proto_in_dir': 'browser/safe_browsing',
+        'proto_out_dir': 'chrome/browser/safe_browsing',
+      },
+      'includes': [ '../build/protoc.gypi' ]
+    },
+    {
       # Protobuf compiler / generator for the safebrowsing reporting
       # protocol buffer.
       # GN version: //chrome/browser/safe_browsing:report_proto