Add unit tests target to GN build.

chrome/browser/ui/views/extensions/browser_action_drag_data_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/pickle.h"
-#include "chrome/browser/ui/views/extensions/browser_action_drag_data.h"
-#include "chrome/test/base/testing_profile.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "ui/base/dragdrop/os_exchange_data.h"
-#include "ui/base/dragdrop/os_exchange_data_provider_win.h"
-#include "url/gurl.h"
-
-namespace {
-
-ui::OSExchangeData::Provider* CloneProvider(const ui::OSExchangeData& data) {
-  return new ui::OSExchangeDataProviderWin(
-      ui::OSExchangeDataProviderWin::GetIDataObject(data));
-}
-
-}  // namespace
-
-typedef testing::Test BrowserActionDragDataTest;
-
-TEST_F(BrowserActionDragDataTest, ArbitraryFormat) {
-  TestingProfile profile;
-  profile.SetID(L"id");
-
-  ui::OSExchangeData data;
-  data.SetURL(GURL("http://www.google.com"), L"Title");
-
-  // We only support our format, so this should not succeed.
-  BrowserActionDragData drag_data;
-  EXPECT_FALSE(drag_data.Read(ui::OSExchangeData(CloneProvider(data))));
-}
-
-TEST_F(BrowserActionDragDataTest, BrowserActionDragDataFormat) {
-  TestingProfile profile;
-  Profile* profile_ptr = &profile;
-  profile.SetID(L"id");
-
-  const std::string extension_id = "42";
-  Pickle pickle;
-  pickle.WriteBytes(&profile_ptr, sizeof(&profile));
-  pickle.WriteString(extension_id);
-  pickle.WriteUInt64(42);
-
-  ui::OSExchangeData data;
-  data.SetPickledData(BrowserActionDragData::GetBrowserActionCustomFormat(),
-                      pickle);
-
-  BrowserActionDragData drag_data;
-  EXPECT_TRUE(drag_data.Read(ui::OSExchangeData(CloneProvider(data))));
-  ASSERT_TRUE(drag_data.IsFromProfile(profile.GetOriginalProfile()));
-  ASSERT_STREQ(extension_id.c_str(), drag_data.id().c_str());
-  ASSERT_EQ(42, drag_data.index());
-}