Merge java_staging/src into java/src.

chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChrome.java

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChrome.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChrome.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChrome.java
deleted file mode 100644
index 90104211758582dad705167816a09a0f5d67a521..0000000000000000000000000000000000000000
--- a/chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerChrome.java
+++ /dev/null
@@ -1,746 +0,0 @@
-// Copyright 2015 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.compositor.layouts;
-
-import android.content.Context;
-import android.graphics.Bitmap;
-import android.text.TextUtils;
-import android.view.ViewGroup;
-
-import org.chromium.base.ObserverList;
-import org.chromium.base.VisibleForTesting;
-import org.chromium.chrome.R;
-import org.chromium.chrome.browser.Tab;
-import org.chromium.chrome.browser.compositor.TitleCache;
-import org.chromium.chrome.browser.compositor.layouts.components.LayoutTab;
-import org.chromium.chrome.browser.compositor.layouts.components.VirtualView;
-import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
-import org.chromium.chrome.browser.compositor.layouts.content.TitleBitmapFactory;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.BlackHoleEventFilter;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.EdgeSwipeEventFilter.ScrollDirection;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.EdgeSwipeHandler;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.EventFilter;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.GestureEventFilter;
-import org.chromium.chrome.browser.compositor.overlays.SceneOverlay;
-import org.chromium.chrome.browser.compositor.overlays.strip.StripLayoutHelperManager;
-import org.chromium.chrome.browser.contextualsearch.ContextualSearchManagementDelegate;
-import org.chromium.chrome.browser.device.DeviceClassManager;
-import org.chromium.chrome.browser.fullscreen.FullscreenManager;
-import org.chromium.chrome.browser.tabmodel.EmptyTabModelObserver;
-import org.chromium.chrome.browser.tabmodel.EmptyTabModelSelectorObserver;
-import org.chromium.chrome.browser.tabmodel.TabCreatorManager;
-import org.chromium.chrome.browser.tabmodel.TabModel;
-import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
-import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
-import org.chromium.chrome.browser.tabmodel.TabModelObserver;
-import org.chromium.chrome.browser.tabmodel.TabModelSelector;
-import org.chromium.chrome.browser.tabmodel.TabModelSelector.CloseAllTabsDelegate;
-import org.chromium.chrome.browser.tabmodel.TabModelSelectorObserver;
-import org.chromium.chrome.browser.tabmodel.TabModelSelectorTabObserver;
-import org.chromium.chrome.browser.tabmodel.TabModelUtils;
-import org.chromium.chrome.browser.util.FeatureUtilities;
-import org.chromium.chrome.browser.widget.OverviewListLayout;
-import org.chromium.ui.base.LocalizationUtils;
-import org.chromium.ui.resources.dynamics.DynamicResourceLoader;
-
-import java.util.List;
-
-/**
- * A {@link Layout} controller for the more complicated Chrome browser.  This is currently a
- * superset of {@link LayoutManagerDocument}.
- */
-public class LayoutManagerChrome
-        extends LayoutManagerDocument implements OverviewModeBehavior, CloseAllTabsDelegate {
-    // Layouts
-    /** An {@link Layout} that should be used as the accessibility tab switcher. */
-    protected OverviewListLayout mOverviewListLayout;
-    /** A {@link Layout} that should be used when the user is swiping sideways on the toolbar. */
-    protected ToolbarSwipeLayout mToolbarSwipeLayout;
-    /** A {@link Layout} that should be used when the user is in the tab switcher. */
-    protected Layout mOverviewLayout;
-
-    // Event Filters
-    /** A {@link EventFilter} that consumes all touch events. */
-    protected EventFilter mBlackHoleEventFilter;
-    private final GestureEventFilter mGestureEventFilter;
-
-    // Event Filter Handlers
-    private final EdgeSwipeHandler mToolbarSwipeHandler;
-
-    // Internal State
-    /** A {@link TitleCache} instance that stores all title/favicon bitmaps as CC resources. */
-    protected TitleCache mTitleCache;
-    /** Responsible for building non-incognito titles. */
-    protected TitleBitmapFactory mStandardTitleBitmapFactory;
-    /** Responsible for building all incognito titles. */
-    protected TitleBitmapFactory mIncognitoTitleBitmapFactory;
-    /** Whether or not animations are enabled.  This can disable certain layouts or effects. */
-    protected boolean mEnableAnimations = true;
-    private boolean mCreatingNtp;
-    private final ObserverList<OverviewModeObserver> mOverviewModeObservers;
-    private TabModelSelectorObserver mTabModelSelectorObserver;
-    private TabModelObserver mTabModelObserver;
-    private TabModelSelectorTabObserver mTabSelectorTabObserver;
-
-    /**
-     * Protected class to handle {@link TabModelObserver} related tasks. Extending classes will
-     * need to override any related calls to add new functionality */
-    protected class LayoutManagerTabModelObserver extends EmptyTabModelObserver {
-        @Override
-        public void didSelectTab(Tab tab, TabSelectionType type, int lastId) {
-            if (tab.getId() != lastId) tabSelected(tab.getId(), lastId, tab.isIncognito());
-        }
-
-        @Override
-        public void willAddTab(Tab tab, TabLaunchType type) {
-            // Open the new tab
-            if (type == TabLaunchType.FROM_INSTANT || type == TabLaunchType.FROM_RESTORE) return;
-
-            tabCreating(getTabModelSelector().getCurrentTabId(), tab.getUrl(), tab.isIncognito());
-        }
-
-        @Override
-        public void didAddTab(Tab tab, TabLaunchType launchType) {
-            int tabId = tab.getId();
-            if (launchType != TabLaunchType.FROM_INSTANT
-                    && launchType != TabLaunchType.FROM_RESTORE) {
-                boolean incognito = tab.isIncognito();
-                boolean willBeSelected = launchType != TabLaunchType.FROM_LONGPRESS_BACKGROUND
-                        || (!getTabModelSelector().isIncognitoSelected() && incognito);
-                float lastTapX = LocalizationUtils.isLayoutRtl() ? mLastContentWidthDp : 0.f;
-                float lastTapY = 0.f;
-                if (launchType != TabLaunchType.FROM_MENU_OR_OVERVIEW) {
-                    float heightDelta =
-                            mLastFullscreenViewportDp.height() - mLastVisibleViewportDp.height();
-                    lastTapX = mPxToDp * mLastTapX;
-                    lastTapY = mPxToDp * mLastTapY - heightDelta;
-                }
-
-                tabCreated(tabId, getTabModelSelector().getCurrentTabId(), launchType, incognito,
-                        willBeSelected, lastTapX, lastTapY);
-            }
-        }
-
-        @Override
-        public void didCloseTab(Tab tab) {
-            tabClosed(tab);
-        }
-
-        @Override
-        public void tabPendingClosure(Tab tab) {
-            tabClosed(tab);
-        }
-
-        @Override
-        public void tabClosureUndone(Tab tab) {
-            tabClosureCancelled(tab.getId(), tab.isIncognito());
-        }
-
-        @Override
-        public void tabClosureCommitted(Tab tab) {
-            LayoutManagerChrome.this.tabClosureCommitted(tab.getId(), tab.isIncognito());
-        }
-
-        @Override
-        public void didMoveTab(Tab tab, int newIndex, int curIndex) {
-            tabMoved(tab.getId(), curIndex, newIndex, tab.isIncognito());
-        }
-    }
-
-    /**
-     * Delegate of a factory to create an overview layout.
-     */
-    public interface OverviewLayoutFactoryDelegate {
-        /**
-         * @param context     The current Android's context.
-         * @param updateHost  The {@link LayoutUpdateHost} view for this layout.
-         * @param renderHost  The {@link LayoutRenderHost} view for this layout.
-         * @param eventFilter The {@link EventFilter} that is needed for this view.
-         */
-        Layout createOverviewLayout(Context context, LayoutUpdateHost updateHost,
-                LayoutRenderHost renderHost, EventFilter eventFilter);
-    }
-
-    /**
-     * Creates the {@link LayoutManagerChrome} instance.
-     * @param host              A {@link LayoutManagerHost} instance.
-     * @param overviewLayoutFactoryDelegate A {@link OverviewLayoutFactoryDelegate} instance.
-     */
-    public LayoutManagerChrome(
-            LayoutManagerHost host, OverviewLayoutFactoryDelegate overviewLayoutFactoryDelegate) {
-        super(host);
-        Context context = host.getContext();
-        LayoutRenderHost renderHost = host.getLayoutRenderHost();
-
-        // Set up state
-        mStandardTitleBitmapFactory =
-                new TitleBitmapFactory(context, false, R.drawable.default_favicon);
-        mIncognitoTitleBitmapFactory =
-                new TitleBitmapFactory(context, true, R.drawable.default_favicon_white);
-        mOverviewModeObservers = new ObserverList<OverviewModeObserver>();
-
-        // Build Event Filter Handlers
-        mToolbarSwipeHandler = new ToolbarSwipeHandler(this);
-
-        // Build Event Filters
-        mBlackHoleEventFilter = new BlackHoleEventFilter(context, this);
-        mGestureEventFilter = new GestureEventFilter(context, this, mGestureHandler);
-
-        // Build Layouts
-        mOverviewListLayout =
-                new OverviewListLayout(context, this, renderHost, mBlackHoleEventFilter);
-        mToolbarSwipeLayout =
-                new ToolbarSwipeLayout(context, this, renderHost, mBlackHoleEventFilter);
-        if (overviewLayoutFactoryDelegate != null) {
-            mOverviewLayout = overviewLayoutFactoryDelegate.createOverviewLayout(
-                    context, this, renderHost, mGestureEventFilter);
-        }
-    }
-
-    /**
-     * @return The {@link TabModelObserver} instance this class should be using.
-     */
-    protected LayoutManagerTabModelObserver createTabModelObserver() {
-        return new LayoutManagerTabModelObserver();
-    }
-
-    /**
-     * @return A list of virtual views representing compositor rendered views.
-     */
-    @Override
-    public void getVirtualViews(List<VirtualView> views) {
-        if (getActiveLayout() != null) {
-            getActiveLayout().getVirtualViews(views);
-        }
-    }
-
-    /**
-     * @return The {@link EdgeSwipeHandler} responsible for processing swipe events for the toolbar.
-     */
-    @Override
-    public EdgeSwipeHandler getTopSwipeHandler() {
-        return mToolbarSwipeHandler;
-    }
-
-    @Override
-    public void init(TabModelSelector selector, TabCreatorManager creator,
-            TabContentManager content, ViewGroup androidContentContainer,
-            ContextualSearchManagementDelegate contextualSearchDelegate,
-            DynamicResourceLoader dynamicResourceLoader) {
-        // TODO: TitleCache should be a part of the ResourceManager.
-        mTitleCache = mHost.getTitleCache();
-
-        // Initialize Layouts
-        mToolbarSwipeLayout.setTabModelSelector(selector, content);
-        mOverviewListLayout.setTabModelSelector(selector, content);
-        if (mOverviewLayout != null) mOverviewLayout.setTabModelSelector(selector, content);
-
-        super.init(selector, creator, content, androidContentContainer, contextualSearchDelegate,
-                dynamicResourceLoader);
-
-        mTabModelSelectorObserver = new EmptyTabModelSelectorObserver() {
-            @Override
-            public void onTabModelSelected(TabModel newModel, TabModel oldModel) {
-                tabModelSwitched(newModel.isIncognito());
-            }
-        };
-        selector.addObserver(mTabModelSelectorObserver);
-        selector.setCloseAllTabsDelegate(this);
-
-        mTabModelObserver = createTabModelObserver();
-        for (TabModel model : selector.getModels()) model.addObserver(mTabModelObserver);
-
-        mTabSelectorTabObserver = new TabModelSelectorTabObserver(selector) {
-            @Override
-            public void onLoadStarted(Tab tab) {
-                tabLoadStarted(tab.getId(), tab.isIncognito());
-            }
-
-            @Override
-            public void onLoadStopped(Tab tab) {
-                tabLoadFinished(tab.getId(), tab.isIncognito());
-            }
-
-            @Override
-            public void onPageLoadStarted(Tab tab, String url) {
-                tabPageLoadStarted(tab.getId(), tab.isIncognito());
-            }
-
-            @Override
-            public void onPageLoadFinished(Tab tab) {
-                tabPageLoadFinished(tab.getId(), tab.isIncognito());
-            }
-
-            @Override
-            public void onPageLoadFailed(Tab tab, int errorCode) {
-                tabPageLoadFinished(tab.getId(), tab.isIncognito());
-            }
-
-            @Override
-            public void onCrash(Tab tab, boolean sadTabShown) {
-                tabPageLoadFinished(tab.getId(), tab.isIncognito());
-            }
-        };
-    }
-
-    @Override
-    public void destroy() {
-        super.destroy();
-        if (mTabModelSelectorObserver != null) {
-            getTabModelSelector().removeObserver(mTabModelSelectorObserver);
-        }
-        if (mTabModelObserver != null) {
-            for (TabModel model : getTabModelSelector().getModels()) {
-                model.removeObserver(mTabModelObserver);
-            }
-        }
-        if (mTabSelectorTabObserver != null) mTabSelectorTabObserver.destroy();
-        mOverviewModeObservers.clear();
-
-        if (mOverviewLayout != null) {
-            mOverviewLayout.destroy();
-            mOverviewLayout = null;
-        }
-        mOverviewListLayout.destroy();
-        mToolbarSwipeLayout.destroy();
-    }
-
-    @Override
-    protected void addGlobalSceneOverlay(SceneOverlay helper) {
-        super.addGlobalSceneOverlay(helper);
-        mOverviewListLayout.addSceneOverlay(helper);
-        mToolbarSwipeLayout.addSceneOverlay(helper);
-        if (mOverviewLayout != null) mOverviewLayout.addSceneOverlay(helper);
-    }
-
-    /**
-     * Meant to be overridden by child classes for when they need to extend the toolbar side swipe
-     * functionality.
-     * @param provider A {@link LayoutProvider} instance.
-     * @return         A {@link ToolbarSwipeHandler} instance that will be used by internal layouts.
-     */
-    protected ToolbarSwipeHandler createToolbarSwipeHandler(LayoutProvider provider) {
-        return new ToolbarSwipeHandler(provider);
-    }
-
-    /**
-     * Simulates a click on the view at the specified pixel offset
-     * from the top left of the view.
-     * This is used by UI tests.
-     * @param x Coordinate of the click in dp.
-     * @param y Coordinate of the click in dp.
-     */
-    @VisibleForTesting
-    public void simulateClick(float x, float y) {
-        if (getActiveLayout() != null) getActiveLayout().click(time(), x, y);
-    }
-
-    /**
-     * Simulates a drag and issues Up-event to commit the drag.
-     * @param x  Coordinate to start the Drag from in dp.
-     * @param y  Coordinate to start the Drag from in dp.
-     * @param dX Amount of drag in X direction in dp.
-     * @param dY Amount of drag in Y direction in dp.
-     */
-    @VisibleForTesting
-    public void simulateDrag(float x, float y, float dX, float dY) {
-        if (getActiveLayout() != null) {
-            getActiveLayout().onDown(0, x, y);
-            getActiveLayout().drag(0, x, y, dX, dY);
-            getActiveLayout().onUpOrCancel(time());
-        }
-    }
-
-    private boolean isOverviewLayout(Layout layout) {
-        return layout != null && (layout == mOverviewLayout || layout == mOverviewListLayout);
-    }
-
-    @Override
-    protected void startShowing(Layout layout, boolean animate) {
-        mCreatingNtp = false;
-        super.startShowing(layout, animate);
-
-        Layout layoutBeingShown = getActiveLayout();
-
-        // Check if a layout is showing that should hide the contextual search bar.
-        if (mContextualSearchDelegate != null
-                && (isOverviewLayout(layoutBeingShown)
-                           || layoutBeingShown == mToolbarSwipeLayout)) {
-            mContextualSearchDelegate.dismissContextualSearchBar();
-        }
-
-        // Check if we should notify OverviewModeObservers.
-        if (isOverviewLayout(layoutBeingShown)) {
-            boolean showToolbar =
-                    !mEnableAnimations || getTabModelSelector().getCurrentModel().getCount() <= 0;
-            for (OverviewModeObserver observer : mOverviewModeObservers) {
-                observer.onOverviewModeStartedShowing(showToolbar);
-            }
-        }
-    }
-
-    @Override
-    public void startHiding(int nextTabId, boolean hintAtTabSelection) {
-        super.startHiding(nextTabId, hintAtTabSelection);
-
-        Layout layoutBeingHidden = getActiveLayout();
-        if (isOverviewLayout(layoutBeingHidden)) {
-            boolean showToolbar = true;
-            if (mEnableAnimations && layoutBeingHidden == mOverviewLayout) {
-                final LayoutTab tab = layoutBeingHidden.getLayoutTab(nextTabId);
-                showToolbar = tab != null ? !tab.showToolbar() : true;
-            }
-
-            boolean creatingNtp = layoutBeingHidden == mOverviewLayout && mCreatingNtp;
-
-            for (OverviewModeObserver observer : mOverviewModeObservers) {
-                observer.onOverviewModeStartedHiding(showToolbar, creatingNtp);
-            }
-        }
-    }
-
-    @Override
-    public void doneShowing() {
-        super.doneShowing();
-
-        if (isOverviewLayout(getActiveLayout())) {
-            for (OverviewModeObserver observer : mOverviewModeObservers) {
-                observer.onOverviewModeFinishedShowing();
-            }
-        }
-    }
-
-    @Override
-    public void doneHiding() {
-        Layout layoutBeingHidden = getActiveLayout();
-
-        if (getNextLayout() == getDefaultLayout()) {
-            Tab tab = getTabModelSelector() != null ? getTabModelSelector().getCurrentTab() : null;
-            emptyCachesExcept(tab != null ? tab.getId() : Tab.INVALID_TAB_ID);
-        }
-
-        super.doneHiding();
-
-        if (isOverviewLayout(layoutBeingHidden)) {
-            for (OverviewModeObserver observer : mOverviewModeObservers) {
-                observer.onOverviewModeFinishedHiding();
-            }
-        }
-    }
-
-    @VisibleForTesting
-    public void tabSelected(int tabId, int prevId, boolean incognito) {
-        // Update the model here so we properly set the right selected TabModel.
-        if (getActiveLayout() != null) {
-            getActiveLayout().onTabSelected(time(), tabId, prevId, incognito);
-        }
-    }
-
-    /**
-     * Should be called when a tab created event is triggered.
-     * @param id             The id of the tab that was created.
-     * @param sourceId       The id of the creating tab if any.
-     * @param launchType     How the tab was launched.
-     * @param incognito      Whether or not the created tab is incognito.
-     * @param willBeSelected Whether or not the created tab will be selected.
-     * @param originX        The x coordinate of the action that created this tab in dp.
-     * @param originY        The y coordinate of the action that created this tab in dp.
-     */
-    protected void tabCreated(int id, int sourceId, TabLaunchType launchType, boolean incognito,
-            boolean willBeSelected, float originX, float originY) {
-        Tab newTab = TabModelUtils.getTabById(getTabModelSelector().getModel(incognito), id);
-        mCreatingNtp = newTab != null && newTab.isNativePage();
-
-        int newIndex = TabModelUtils.getTabIndexById(getTabModelSelector().getModel(incognito), id);
-        getActiveLayout().onTabCreated(
-                time(), id, newIndex, sourceId, incognito, !willBeSelected, originX, originY);
-    }
-
-    /**
-     * Should be called when a tab creating event is triggered (called before the tab is done being
-     * created).
-     * @param sourceId    The id of the creating tab if any.
-     * @param url         The url of the created tab.
-     * @param isIncognito Whether or not created tab will be incognito.
-     */
-    protected void tabCreating(int sourceId, String url, boolean isIncognito) {
-        if (getActiveLayout() != null) getActiveLayout().onTabCreating(sourceId);
-    }
-
-    /**
-     * Should be called when a tab closed event is triggered.
-     * @param id        The id of the closed tab.
-     * @param nextId    The id of the next tab that will be visible, if any.
-     * @param incognito Whether or not the closed tab is incognito.
-     */
-    protected void tabClosed(int id, int nextId, boolean incognito) {
-        if (getActiveLayout() != null) getActiveLayout().onTabClosed(time(), id, nextId, incognito);
-    }
-
-    private void tabClosed(Tab tab) {
-        Tab currentTab =
-                getTabModelSelector() != null ? getTabModelSelector().getCurrentTab() : null;
-        int nextTabId = currentTab != null ? currentTab.getId() : Tab.INVALID_TAB_ID;
-        tabClosed(tab.getId(), nextTabId, tab.isIncognito());
-    }
-
-    /**
-     * Called when a tab closure has been committed and all tab cleanup should happen.
-     * @param id        The id of the closed tab.
-     * @param incognito Whether or not the closed tab is incognito.
-     */
-    protected void tabClosureCommitted(int id, boolean incognito) {
-        if (getActiveLayout() != null) {
-            getActiveLayout().onTabClosureCommitted(time(), id, incognito);
-        }
-    }
-
-    @Override
-    public boolean closeAllTabsRequest(boolean incognito) {
-        if (!isOverviewLayout(getActiveLayout()) || !getActiveLayout().handlesCloseAll()) {
-            return false;
-        }
-        getActiveLayout().onTabsAllClosing(time(), incognito);
-        return true;
-    }
-
-    /**
-     * Called when the selected tab model has switched.
-     * @param incognito Whether or not the new current tab model is incognito.
-     */
-    protected void tabModelSwitched(boolean incognito) {
-        if (getActiveLayout() != null) getActiveLayout().onTabModelSwitched(incognito);
-    }
-
-    private void tabMoved(int id, int oldIndex, int newIndex, boolean incognito) {
-        if (getActiveLayout() != null) {
-            getActiveLayout().onTabMoved(time(), id, oldIndex, newIndex, incognito);
-        }
-    }
-
-    private void tabPageLoadStarted(int id, boolean incognito) {
-        if (getActiveLayout() != null) getActiveLayout().onTabPageLoadStarted(id, incognito);
-    }
-
-    private void tabPageLoadFinished(int id, boolean incognito) {
-        if (getActiveLayout() != null) getActiveLayout().onTabPageLoadFinished(id, incognito);
-    }
-
-    private void tabLoadStarted(int id, boolean incognito) {
-        if (getActiveLayout() != null) getActiveLayout().onTabLoadStarted(id, incognito);
-    }
-
-    private void tabLoadFinished(int id, boolean incognito) {
-        if (getActiveLayout() != null) getActiveLayout().onTabLoadFinished(id, incognito);
-    }
-
-    private void tabClosureCancelled(int id, boolean incognito) {
-        if (getActiveLayout() != null) {
-            getActiveLayout().onTabClosureCancelled(time(), id, incognito);
-        }
-    }
-
-    @Override
-    public void initLayoutTabFromHost(int tabId) {
-        super.initLayoutTabFromHost(tabId);
-
-        if (getTabModelSelector() == null || getActiveLayout() == null) return;
-
-        TabModelSelector selector = getTabModelSelector();
-        Tab tab = selector.getTabById(tabId);
-        if (tab == null) return;
-
-        LayoutTab layoutTab = getExistingLayoutTab(tabId);
-        if (layoutTab == null) return;
-
-        if (mTitleCache != null && layoutTab.isTitleNeeded()) {
-            mTitleCache.put(tabId, getTitleBitmap(tab), getFaviconBitmap(tab), tab.isIncognito(),
-                    tab.isTitleDirectionRtl());
-        }
-    }
-
-    /**
-     * Builds a title bitmap for a {@link Tab}. This function does not do anything in the
-     * general case because only the phone need to bake special resource.
-     *
-     * @param tab The tab to build the title bitmap for.
-     * @return The Title bitmap
-     */
-    protected Bitmap getTitleBitmap(Tab tab) {
-        TitleBitmapFactory titleBitmapFactory =
-                tab.isIncognito() ? mIncognitoTitleBitmapFactory : mStandardTitleBitmapFactory;
-
-        return titleBitmapFactory.getTitleBitmap(mHost.getContext(), getTitleForTab(tab));
-    }
-
-    /**
-     * Comes up with a valid title to return for a tab.
-     * @param tab The {@link Tab} to build a title for.
-     * @return    The title to use.
-     */
-    protected String getTitleForTab(Tab tab) {
-        String title = tab.getTitle();
-        if (TextUtils.isEmpty(title)) title = tab.getUrl();
-        return title;
-    }
-
-    /**
-     * Builds a favicon bitmap for a {@link Tab}. This function does not do anything in the
-     * general case because only the phone need to bake special texture.
-     *
-     * @param tab The tab to build the title bitmap for.
-     * @return The Favicon bitmap
-     */
-    protected Bitmap getFaviconBitmap(Tab tab) {
-        TitleBitmapFactory titleBitmapFactory =
-                tab.isIncognito() ? mIncognitoTitleBitmapFactory : mStandardTitleBitmapFactory;
-        return titleBitmapFactory.getFaviconBitmap(mHost.getContext(), tab.getFavicon());
-    }
-
-    /**
-     * @return The {@link OverviewListLayout} managed by this class.
-     */
-    @VisibleForTesting
-    public Layout getOverviewListLayout() {
-        return mOverviewListLayout;
-    }
-
-    /**
-     * @return The overview layout {@link Layout} managed by this class.
-     */
-    @VisibleForTesting
-    public Layout getOverviewLayout() {
-        return mOverviewLayout;
-    }
-
-    /**
-     * @return The {@link StripLayoutHelperManager} managed by this class.
-     */
-    @VisibleForTesting
-    public StripLayoutHelperManager getStripLayoutHelperManager() {
-        return null;
-    }
-
-    /**
-     * @return Whether or not to use the accessibility layout.
-     */
-    protected boolean useAccessibilityLayout() {
-        return DeviceClassManager.isAccessibilityModeEnabled(mHost.getContext())
-                || DeviceClassManager.enableAccessibilityLayout();
-    }
-
-    /**
-     * Show the overview {@link Layout}.  This is generally a {@link Layout} that visibly represents
-     * all of the {@link Tab}s opened by the user.
-     * @param animate Whether or not to animate the transition to overview mode.
-     */
-    public void showOverview(boolean animate) {
-        boolean useAccessibility = useAccessibilityLayout();
-
-        boolean accessibilityIsVisible =
-                useAccessibility && getActiveLayout() == mOverviewListLayout;
-        boolean normalIsVisible = getActiveLayout() == mOverviewLayout && mOverviewLayout != null;
-
-        // We only want to use the AccessibilityOverviewLayout if the following are all valid:
-        // 1. We're already showing the AccessibilityOverviewLayout OR we're using accessibility.
-        // 2. We're not already showing the normal OverviewLayout (or we are on a tablet, in which
-        //    case the normal layout is always visible).
-        if ((accessibilityIsVisible || useAccessibility) && !normalIsVisible) {
-            startShowing(mOverviewListLayout, animate);
-        } else if (mOverviewLayout != null) {
-            startShowing(mOverviewLayout, animate);
-        }
-    }
-
-    /**
-     * Hides the current {@link Layout}, returning to the default {@link Layout}.
-     * @param animate Whether or not to animate the transition to the default {@link Layout}.
-     */
-    public void hideOverview(boolean animate) {
-        Layout activeLayout = getActiveLayout();
-        if (activeLayout != null && !activeLayout.isHiding()) {
-            if (animate) {
-                activeLayout.onTabSelecting(time(), Tab.INVALID_TAB_ID);
-            } else {
-                startHiding(Tab.INVALID_TAB_ID, false);
-                doneHiding();
-            }
-        }
-    }
-
-    /**
-     * @param enabled Whether or not to allow model-reactive animations (tab creation, closing,
-     *                etc.).
-     */
-    public void setEnableAnimations(boolean enabled) {
-        mEnableAnimations = enabled;
-    }
-
-    @Override
-    public boolean overviewVisible() {
-        Layout activeLayout = getActiveLayout();
-        return isOverviewLayout(activeLayout) && !activeLayout.isHiding();
-    }
-
-    @Override
-    public void addOverviewModeObserver(OverviewModeObserver listener) {
-        mOverviewModeObservers.addObserver(listener);
-    }
-
-    @Override
-    public void removeOverviewModeObserver(OverviewModeObserver listener) {
-        mOverviewModeObservers.removeObserver(listener);
-    }
-
-    /**
-     * A {@link EdgeSwipeHandler} meant to respond to edge events for the toolbar.
-     */
-    protected class ToolbarSwipeHandler extends EdgeSwipeHandlerLayoutDelegate {
-        /**
-         * Creates an instance of the {@link ToolbarSwipeHandler}.
-         * @param provider A {@link LayoutProvider} instance.
-         */
-        public ToolbarSwipeHandler(LayoutProvider provider) {
-            super(provider);
-        }
-
-        @Override
-        public void swipeStarted(ScrollDirection direction, float x, float y) {
-            if (direction == ScrollDirection.DOWN) {
-                startShowing(mOverviewLayout, true);
-                super.swipeStarted(direction, x, y);
-            } else if (direction == ScrollDirection.LEFT || direction == ScrollDirection.RIGHT) {
-                startShowing(mToolbarSwipeLayout, true);
-                super.swipeStarted(direction, x, y);
-            }
-        }
-
-        @Override
-        public boolean isSwipeEnabled(ScrollDirection direction) {
-            FullscreenManager manager = mHost.getFullscreenManager();
-            if (getActiveLayout() != mStaticLayout
-                    || !DeviceClassManager.enableToolbarSwipe(
-                               FeatureUtilities.isDocumentMode(mHost.getContext()))
-                    || (manager != null && manager.getPersistentFullscreenMode())) {
-                return false;
-            }
-
-            boolean isAccessibility =
-                    DeviceClassManager.isAccessibilityModeEnabled(mHost.getContext());
-            return direction == ScrollDirection.LEFT || direction == ScrollDirection.RIGHT
-                    || (direction == ScrollDirection.DOWN && mOverviewLayout != null
-                               && !isAccessibility);
-        }
-    }
-
-    /**
-     * @param id The id of the {@link Tab} to search for.
-     * @return   A {@link Tab} instance or {@code null} if it could be found.
-     */
-    protected Tab getTabById(int id) {
-        TabModelSelector selector = getTabModelSelector();
-        return selector == null ? null : selector.getTabById(id);
-    }
-}