Send important client side event information to the server.

chrome/browser/sync/engine/download_updates_command_unittest.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/sync/engine/download_updates_command.h"
 #include "chrome/browser/sync/protocol/autofill_specifics.pb.h"
 #include "chrome/browser/sync/protocol/bookmark_specifics.pb.h"
 #include "chrome/browser/sync/protocol/preference_specifics.pb.h"
 #include "chrome/browser/sync/protocol/sync.pb.h"
 #include "chrome/browser/sync/syncable/directory_manager.h"
 #include "chrome/browser/sync/test/engine/proto_extension_validator.h"
 #include "chrome/browser/sync/test/engine/syncer_command_test.h"
 
+using ::testing::_;
 namespace browser_sync {
 
 using syncable::FIRST_REAL_MODEL_TYPE;
 using syncable::MODEL_TYPE_COUNT;
 
 // A test fixture for tests exercising DownloadUpdatesCommandTest.
 class DownloadUpdatesCommandTest : public SyncerCommandTest {
  protected:
   DownloadUpdatesCommandTest() {}
 
@@ skipping 101 matching lines @@
   SetRoutingInfo(types);
   sessions::SyncSourceInfo source;
   source.types[syncable::AUTOFILL] = "autofill_payload";
   source.types[syncable::BOOKMARKS] = "bookmark_payload";
   source.types[syncable::PREFERENCES] = "preferences_payload";
   mock_server()->ExpectGetUpdatesRequestTypes(ModelTypeBitSetFromSet(types));
   mock_server()->ExpectGetUpdatesRequestPayloads(source.types);
   command_.ExecuteImpl(session(source));
 }
 
+TEST_F(DownloadUpdatesCommandTest, VerifyAppendDebugInfo) {
+  sync_pb::DebugInfo debug_info;
+  EXPECT_CALL(*(mock_debug_info_getter()), GetAndClearDebugInfo(_))
+      .Times(1);
+  command_.AppendClientDebugInfoIfNeeded(session(), &debug_info);
+
+  // Now try to add it once more and make sure |GetAndClearDebugInfo| is not
+  // called.
+  command_.AppendClientDebugInfoIfNeeded(session(), &debug_info);
+}
+
 }  // namespace browser_sync