Initial clear server data impl

chrome/browser/sync/test/integration/sync_test.cc

Index: chrome/browser/sync/test/integration/sync_test.cc
diff --git a/chrome/browser/sync/test/integration/sync_test.cc b/chrome/browser/sync/test/integration/sync_test.cc
index f40d1f98fd44fbfb4f595c9aa98392743c0720e2..5581d3d09e049c3b807d67fcf0b7e6cba65e2b0a 100644
--- a/chrome/browser/sync/test/integration/sync_test.cc
+++ b/chrome/browser/sync/test/integration/sync_test.cc
@@ -231,7 +231,9 @@ SyncTest::SyncTest(TestType test_type)
   }
 }
 
-SyncTest::~SyncTest() {}
+SyncTest::~SyncTest() {
+  sync_datatype_helper::DissociateWithTest(this);
+}
 
 void SyncTest::SetUp() {
   // Sets |server_type_| if it wasn't specified by the test.
@@ -611,9 +613,29 @@ bool SyncTest::SetupSync() {
     }
   }
 
+  int clientIndex = 0;
+  // If we're using external servers, clear server data so the account starts
+  // with a clean slate.
+  if (UsingExternalServers()) {
+    // Setup the first client so the sync engine is initialized, which is
+    // required to clear server data.
+    DVLOG(1) << "Setting up first client for clear.";
+    if (!GetClient(clientIndex)->SetupSyncForClear()) {
+      LOG(FATAL) << "SetupSync() failed.";
+      return false;
+    }
+
+    DVLOG(1) << "Done setting up first client for clear.";
+    if (!ClearServerData(GetClient(clientIndex++))) {
+      LOG(FATAL) << "ClearServerData failed.";
+      return false;
+    }
+  }
+
   // Sync each of the profiles.
-  for (int i = 0; i < num_clients_; ++i) {
-    if (!GetClient(i)->SetupSync()) {
+  for (; clientIndex < num_clients_; clientIndex++) {
+    DVLOG(1) << "Setting up " << clientIndex << " client";
+    if (!GetClient(clientIndex)->SetupSync()) {
       LOG(FATAL) << "SetupSync() failed.";
       return false;
     }
@@ -1139,3 +1161,14 @@ void SyncTest::SetPreexistingPreferencesFileContents(
     const std::string& contents) {
   preexisting_preferences_file_contents_ = contents;
 }
+
+bool SyncTest::ClearServerData(ProfileSyncServiceHarness* harness) {
+  // At this point our birthday is good.
+  base::RunLoop run_loop;
+  harness->service()->ClearServerDataForTest(run_loop.QuitClosure());
+  run_loop.Run();
+
+  // Our birthday is bad here so restart sync to get the new birthday from the
+  // server.
+  return harness->RestartSyncService();
+}