Revert of Add MemoryCoordinator

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 "components/memory_coordinator/browser/memory_coordinator.h"
-#include "components/memory_coordinator/common/memory_coordinator_features.h"
-#include "content/browser/browser_main_loop.h"
-#include "content/public/test/content_browser_test.h"
-#include "content/public/test/content_browser_test_utils.h"
-
-namespace content {
-
-class MemoryCoordinatorTest : public ContentBrowserTest {
- public:
-  MemoryCoordinatorTest() {}
-
-  void SetUp() override {
-    memory_coordinator::EnableForTesting();
-    ContentBrowserTest::SetUp();
-  }
-
- protected:
-  memory_coordinator::MemoryCoordinator* memory_coordinator() {
-    return BrowserMainLoop::GetInstance()->memory_coordinator();
-  }
-
-  DISALLOW_COPY_AND_ASSIGN(MemoryCoordinatorTest);
-};
-
-IN_PROC_BROWSER_TEST_F(MemoryCoordinatorTest, HandleAdded) {
-  GURL url = GetTestUrl("", "simple_page.html");
-  NavigateToURL(shell(), url);
-  EXPECT_EQ(1u, memory_coordinator()->NumChildrenForTesting());
-}
-
-}  // namespace content