Merge MemoryCoordinator and MemoryCoordinatorImpl into one class

content/browser/memory/memory_coordinator_browsertest.cc

-// Copyright 2016 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 "content/browser/memory/memory_coordinator.h"
-
-#include "base/test/scoped_feature_list.h"
-#include "content/browser/browser_main_loop.h"
-#include "content/public/common/content_features.h"
-#include "content/public/test/content_browser_test.h"
-#include "content/public/test/content_browser_test_utils.h"
-
-namespace content {
-
-class TestMemoryCoordinatorDelegate : public MemoryCoordinatorDelegate {
- public:
-  TestMemoryCoordinatorDelegate() {}
-  ~TestMemoryCoordinatorDelegate() override {}
-
-  bool CanSuspendBackgroundedRenderer(int render_process_id) override {
-    return true;
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestMemoryCoordinatorDelegate);
-};
-
-class MemoryCoordinatorTest : public ContentBrowserTest {
- public:
-  MemoryCoordinatorTest() {}
-
-  void SetUp() override {
-    scoped_feature_list_.InitAndEnableFeature(features::kMemoryCoordinator);
-    ContentBrowserTest::SetUp();
-  }
-
- private:
-  base::test::ScopedFeatureList scoped_feature_list_;
-
-  DISALLOW_COPY_AND_ASSIGN(MemoryCoordinatorTest);
-};
-
-// TODO(bashi): Enable these tests on macos when MemoryMonitorMac is
-// implemented.
-#if !defined(OS_MACOSX)
-
-IN_PROC_BROWSER_TEST_F(MemoryCoordinatorTest, HandleAdded) {
-  GURL url = GetTestUrl("", "simple_page.html");
-  NavigateToURL(shell(), url);
-  EXPECT_EQ(1u, MemoryCoordinator::GetInstance()->children().size());
-}
-
-IN_PROC_BROWSER_TEST_F(MemoryCoordinatorTest, CanSuspendRenderer) {
-  GURL url = GetTestUrl("", "simple_page.html");
-  NavigateToURL(shell(), url);
-  auto* memory_coordinator = MemoryCoordinator::GetInstance();
-  memory_coordinator->SetDelegateForTesting(
-      base::MakeUnique<TestMemoryCoordinatorDelegate>());
-  EXPECT_EQ(1u, memory_coordinator->children().size());
-  int render_process_id = memory_coordinator->children().begin()->first;
-  // Foreground tab cannot be suspended.
-  EXPECT_FALSE(memory_coordinator->CanSuspendRenderer(render_process_id));
-}
-
-#endif  // !defined(OS_MACOSX)
-
-}  // namespace content