[Android History] List item shadows and width constrained styling

chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/MarginResizer.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/MarginResizer.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/MarginResizer.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/MarginResizer.java
deleted file mode 100644
index 116e7230d6863e58907e56cd7a71334364c9f766..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/MarginResizer.java
+++ /dev/null
@@ -1,71 +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.ntp.cards;
-
-import android.view.View;
-import android.view.ViewGroup.MarginLayoutParams;
-
-import org.chromium.chrome.R;
-import org.chromium.chrome.browser.ntp.DisplayStyleObserver;
-import org.chromium.chrome.browser.ntp.UiConfig;
-
-/**
- * Adds lateral margins to the view when the display style is {@link UiConfig#DISPLAY_STYLE_WIDE}.
- */
-public class MarginResizer implements DisplayStyleObserver {
-    private int mDefaultMarginSizePixels;
-    private final int mWideMarginSizePixels;
-    private final View mView;
-
-    @UiConfig.DisplayStyle
-    private int mCurrentDisplayStyle;
-
-    /**
-     * Factory method that creates a {@link MarginResizer} and wraps it in a
-     * {@link DisplayStyleObserverAdapter} that will take care of invoking it when appropriate.
-     * @param view the view that will have its margins resized
-     * @param config the UiConfig object to subscribe to
-     * @return the newly created {@link MarginResizer}
-     */
-    public static MarginResizer createWithViewAdapter(View view, UiConfig config) {
-        MarginResizer marginResizer = new MarginResizer(view);
-        new DisplayStyleObserverAdapter(view, config, marginResizer);
-        return marginResizer;
-    }
-
-    public MarginResizer(View view) {
-        mView = view;
-        mWideMarginSizePixels =
-                view.getResources().getDimensionPixelSize(R.dimen.ntp_wide_card_lateral_margins);
-    }
-
-    @Override
-    public void onDisplayStyleChanged(@UiConfig.DisplayStyle int newDisplayStyle) {
-        mCurrentDisplayStyle = newDisplayStyle;
-        updateMargins();
-    }
-
-    /**
-     * Sets the lateral margins on the associated view, using the appropriate value depending on
-     * the current display style.
-     * @param marginPixels margin size to use in {@link UiConfig#DISPLAY_STYLE_REGULAR}. This value
-     *                     will be used as new default value for the lateral margins.
-     */
-    public void setMargins(int marginPixels) {
-        this.mDefaultMarginSizePixels = marginPixels;
-        updateMargins();
-    }
-
-    private void updateMargins() {
-        MarginLayoutParams layoutParams = (MarginLayoutParams) mView.getLayoutParams();
-        if (mCurrentDisplayStyle == UiConfig.DISPLAY_STYLE_WIDE) {
-            layoutParams.setMargins(mWideMarginSizePixels, layoutParams.topMargin,
-                    mWideMarginSizePixels, layoutParams.bottomMargin);
-        } else {
-            layoutParams.setMargins(mDefaultMarginSizePixels, layoutParams.topMargin,
-                    mDefaultMarginSizePixels, layoutParams.bottomMargin);
-        }
-    }
-}