Revert of Android: Make the spare renderer accessible to all Chrome tabs.

chrome/android/javatests/src/org/chromium/chrome/browser/WarmupManagerTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/WarmupManagerTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/WarmupManagerTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/WarmupManagerTest.java
deleted file mode 100644
index 5bdee76ffec5215819f8825c02379dec31e23eb5..0000000000000000000000000000000000000000
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/WarmupManagerTest.java
+++ /dev/null
@@ -1,121 +0,0 @@
-// 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.
-
-package org.chromium.chrome.browser;
-
-import static org.chromium.base.test.util.Restriction.RESTRICTION_TYPE_LOW_END_DEVICE;
-import static org.chromium.base.test.util.Restriction.RESTRICTION_TYPE_NON_LOW_END_DEVICE;
-
-import android.test.UiThreadTest;
-import android.test.suitebuilder.annotation.SmallTest;
-
-import org.chromium.base.ThreadUtils;
-import org.chromium.base.test.util.Restriction;
-import org.chromium.content.browser.test.NativeLibraryTestBase;
-import org.chromium.content.browser.test.util.Criteria;
-import org.chromium.content.browser.test.util.CriteriaHelper;
-import org.chromium.content_public.browser.WebContents;
-import org.chromium.content_public.browser.WebContentsObserver;
-
-import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.concurrent.atomic.AtomicReference;
-
-/** Tests for {@link WarmupManager} */
-public class WarmupManagerTest extends NativeLibraryTestBase {
-    private WarmupManager mWarmupManager;
-
-    @Override
-    protected void setUp() throws Exception {
-        super.setUp();
-        loadNativeLibraryAndInitBrowserProcess();
-        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
-            @Override
-            public void run() {
-                mWarmupManager = WarmupManager.getInstance();
-            }
-        });
-    }
-
-    @Override
-    protected void tearDown() throws Exception {
-        super.tearDown();
-        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
-            @Override
-            public void run() {
-                mWarmupManager.destroySpareWebContents();
-            }
-        });
-    }
-
-    @SmallTest
-    @Restriction(RESTRICTION_TYPE_LOW_END_DEVICE)
-    @UiThreadTest
-    public void testNoSpareRendererOnLowEndDevices() {
-        mWarmupManager.createSpareWebContents();
-        assertFalse(mWarmupManager.hasSpareWebContents());
-    }
-
-    @SmallTest
-    @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
-    public void testCreateAndTakeSpareRenderer() throws Exception {
-        final AtomicBoolean isRenderViewReady = new AtomicBoolean();
-        final AtomicReference<WebContents> webContentsReference = new AtomicReference<>();
-        final WebContentsObserver observer = new WebContentsObserver() {
-            @Override
-            public void renderViewReady() {
-                isRenderViewReady.set(true);
-            }
-        };
-
-        ThreadUtils.runOnUiThread(new Runnable() {
-            @Override
-            public void run() {
-                mWarmupManager.createSpareWebContents();
-                assertTrue(mWarmupManager.hasSpareWebContents());
-                WebContents webContents = mWarmupManager.takeSpareWebContents(false, false);
-                assertNotNull(webContents);
-                assertFalse(mWarmupManager.hasSpareWebContents());
-                // This is not racy because {@link WebContentsObserver} methods are called on the UI
-                // thread by posting a task. See {@link RenderViewHostImpl::PostRenderViewReady}.
-                webContents.addObserver(observer);
-                webContentsReference.set(webContents);
-            }
-        });
-        CriteriaHelper.pollUiThread(new Criteria("Spare renderer is not initialized") {
-            @Override
-            public boolean isSatisfied() {
-                return isRenderViewReady.get();
-            }
-        });
-        ThreadUtils.runOnUiThread(new Runnable() {
-            @Override
-            public void run() {
-                webContentsReference.get().destroy();
-            }
-        });
-    }
-
-    /** Tests that taking a spare WebContents makes it unavailable to subsequent callers. */
-    @SmallTest
-    @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
-    @UiThreadTest
-    public void testTakeSpareWebContents() throws Exception {
-        mWarmupManager.createSpareWebContents();
-        WebContents webContents = mWarmupManager.takeSpareWebContents(false, false);
-        assertNotNull(webContents);
-        assertFalse(mWarmupManager.hasSpareWebContents());
-        webContents.destroy();
-    }
-
-    @SmallTest
-    @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
-    @UiThreadTest
-    public void testTakeSpareWebContentsChecksArguments() throws Exception {
-        mWarmupManager.createSpareWebContents();
-        assertNull(mWarmupManager.takeSpareWebContents(true, false));
-        assertNull(mWarmupManager.takeSpareWebContents(false, true));
-        assertNull(mWarmupManager.takeSpareWebContents(true, true));
-        assertTrue(mWarmupManager.hasSpareWebContents());
-    }
-}