Move unit tests to test/unittests.

src/libplatform/default-platform-unittest.cc

-// Copyright 2014 the V8 project 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 "src/libplatform/default-platform.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-using testing::InSequence;
-using testing::StrictMock;
-
-namespace v8 {
-namespace platform {
-
-namespace {
-
-struct MockTask : public Task {
-  virtual ~MockTask() { Die(); }
-  MOCK_METHOD0(Run, void());
-  MOCK_METHOD0(Die, void());
-};
-
-}  // namespace
-
-
-TEST(DefaultPlatformTest, PumpMessageLoop) {
-  InSequence s;
-
-  int dummy;
-  Isolate* isolate = reinterpret_cast<Isolate*>(&dummy);
-
-  DefaultPlatform platform;
-  EXPECT_FALSE(platform.PumpMessageLoop(isolate));
-
-  StrictMock<MockTask>* task = new StrictMock<MockTask>;
-  platform.CallOnForegroundThread(isolate, task);
-  EXPECT_CALL(*task, Run());
-  EXPECT_CALL(*task, Die());
-  EXPECT_TRUE(platform.PumpMessageLoop(isolate));
-  EXPECT_FALSE(platform.PumpMessageLoop(isolate));
-}
-
-}  // namespace platform
-}  // namespace v8