Add base:: to string16s in sandbox/.

sandbox/win/src/app_container_unittest.cc

 // Copyright (c) 2012 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 "base/win/windows_version.h"
 #include "sandbox/win/src/app_container.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace sandbox {
 
@@ skipping 19 matching lines @@
   EXPECT_EQ(SBOX_ERROR_INVALID_APP_CONTAINER,
             CreateAppContainer(L"Foo", kName));
 }
 
 // Tests handling of security capabilities on the attribute list.
 TEST(AppContainerTest, SecurityCapabilities) {
   if (base::win::OSInfo::GetInstance()->version() < base::win::VERSION_WIN8)
     return;
 
   scoped_ptr<AppContainerAttributes> attributes(new AppContainerAttributes);
-  std::vector<string16> capabilities;
+  std::vector<base::string16> capabilities;
   EXPECT_EQ(SBOX_ERROR_INVALID_APP_CONTAINER,
             attributes->SetAppContainer(L"S-1-foo", capabilities));
 
   EXPECT_EQ(SBOX_ALL_OK,
             attributes->SetAppContainer(L"S-1-15-2-12345-234", capabilities));
   EXPECT_TRUE(attributes->HasAppContainer());
 
   attributes.reset(new AppContainerAttributes);
   capabilities.push_back(L"S-1-15-3-12345678-87654321");
   capabilities.push_back(L"S-1-15-3-1");
   capabilities.push_back(L"S-1-15-3-2");
   capabilities.push_back(L"S-1-15-3-3");
   EXPECT_EQ(SBOX_ALL_OK,
             attributes->SetAppContainer(L"S-1-15-2-1-2", capabilities));
   EXPECT_TRUE(attributes->HasAppContainer());
 }
 
 }  // namespace sandbox