Finished implementing AttestationPolicyObserver.

chrome/chrome_browser_chromeos.gypi

Index: chrome/chrome_browser_chromeos.gypi
diff --git a/chrome/chrome_browser_chromeos.gypi b/chrome/chrome_browser_chromeos.gypi
index 0c3f3d54eb3b06f0c148109fa65a51478278edaf..a65dc8cc44cf79e2bad434db04b30b6cceb71a99 100644
--- a/chrome/chrome_browser_chromeos.gypi
+++ b/chrome/chrome_browser_chromeos.gypi
@@ -23,6 +23,7 @@
       'dependencies': [
         # TODO(tbarzic): Cleanup this list.
         'app/policy/cloud_policy_codegen.gyp:policy',
+	'attestation_proto',
         'browser_extensions',
         'browser/performance_monitor/performance_monitor.gyp:performance_monitor',
         'cert_logger_proto',
@@ -894,5 +895,18 @@
       },
       'includes': [ '../build/protoc.gypi' ]
     },
+    {
+      # Protobuf compiler / generator for attestation protocol buffers.
+      'target_name': 'attestation_proto',
+      'type': 'static_library',
+      'sources': [
+        'browser/chromeos/attestation/attestation_key_payload.proto',
+      ],
+      'variables': {
+        'proto_in_dir': 'browser/chromeos/attestation',
+        'proto_out_dir': 'chrome/browser/chromeos/attestation',
+      },
+      'includes': [ '../build/protoc.gypi' ]
+    },
   ],
 }