sync: Add GetAllSyncData to sync/api

chrome/browser/sync/glue/generic_change_processor_unittest.cc

 // Copyright 2013 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/glue/generic_change_processor.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
@@ skipping 93 matching lines @@
 
   for (int i = 0; i < kRepeatCount; ++i) {
     syncer::SyncDataList sync_data;
     change_processor()->GetSyncDataForType(kType, &sync_data);
 
     // Start with a simple test.  We can add more in-depth testing later.
     EXPECT_EQ(static_cast<size_t>(kNumChildNodes), sync_data.size());
   }
 }
 
+// Similar to above, but focused on the method that implements sync/api
+// interfaces and is hence exposed to datatypes directly.
+TEST_F(SyncGenericChangeProcessorTest, StressGetAllSyncData) {
+  const int kNumChildNodes = 1000;
+  const int kRepeatCount = 1;
+
+  ASSERT_NO_FATAL_FAILURE(BuildChildNodes(kNumChildNodes));
+
+  for (int i = 0; i < kRepeatCount; ++i) {
+    syncer::SyncDataList sync_data =
+        change_processor()->GetAllSyncData(kType);
+
+    // Start with a simple test.  We can add more in-depth testing later.
+    EXPECT_EQ(static_cast<size_t>(kNumChildNodes), sync_data.size());
+  }
+}
+
 TEST_F(SyncGenericChangeProcessorTest, SetGetPasswords) {
   const int kNumPasswords = 10;
   sync_pb::PasswordSpecificsData password_data;
   password_data.set_username_value("user");
 
   sync_pb::EntitySpecifics password_holder;
 
   syncer::SyncChangeList change_list;
   for (int i = 0; i < kNumPasswords; ++i) {
     password_data.set_password_value(
@@ skipping 116 matching lines @@
     ASSERT_TRUE(raw_specifics.has_password());
     ASSERT_TRUE(raw_specifics.password().has_encrypted());
     ASSERT_FALSE(raw_specifics.password().has_client_only_encrypted_data());
   }
 }
 
 }  // namespace
 
 }  // namespace browser_sync