Remove UiConstants

This class is no longer needed.

Bug: 960392
Change-Id: If2a6bf13fad036c4133324df1ad41e00a4545439
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1598200Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Ian Vollick <vollick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#657441}

content/public/android/BUILD.gn

@@ -155,7 +155,6 @@ android_library("content_java") {
     "java/src/org/chromium/content/browser/SpeechRecognitionImpl.java",
     "java/src/org/chromium/content/browser/SyntheticGestureTarget.java",
     "java/src/org/chromium/content/browser/TracingControllerAndroidImpl.java",
-    "java/src/org/chromium/content/browser/UiConstants.java",
     "java/src/org/chromium/content/browser/UiThreadTaskTraitsImpl.java",
     "java/src/org/chromium/content/browser/ViewEventSinkImpl.java",
     "java/src/org/chromium/content/browser/WindowEventObserver.java",
@@ -414,7 +413,6 @@ generate_jni("content_jni_headers") {
     "java/src/org/chromium/content/browser/SyntheticGestureTarget.java",
     "java/src/org/chromium/content/browser/TracingControllerAndroidImpl.java",
     "java/src/org/chromium/content/browser/TtsPlatformImpl.java",
-    "java/src/org/chromium/content/browser/UiConstants.java",
     "java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityState.java",
     "java/src/org/chromium/content/browser/accessibility/WebContentsAccessibilityImpl.java",
     "java/src/org/chromium/content/browser/accessibility/captioning/CaptioningController.java",

content/public/android/java/src/org/chromium/content/browser/UiConstants.java

-// Copyright 2019 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.content.browser;
-
-import org.chromium.base.ThreadUtils;
-import org.chromium.base.annotations.CalledByNative;
-
-/**
- * Platform-provided UI constants.
- */
-public class UiConstants {
-    private static final String UI_CONSTANTS_INTERNAL =
-            "org.chromium.content.browser.UiConstantsInternal";
-    private static UiConstants sInstance;
-
-    private static UiConstants getInstance() {
-        ThreadUtils.assertOnUiThread();
-        if (sInstance != null) return sInstance;
-        try {
-            sInstance = (UiConstants) Class.forName(UI_CONSTANTS_INTERNAL).newInstance();
-        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException
-                | IllegalArgumentException e) {
-            sInstance = new UiConstants();
-        }
-        return sInstance;
-    }
-
-    @CalledByNative
-    private static boolean isFocusRingOutset() {
-        return getInstance().isFocusRingOutsetInternal();
-    }
-
-    @CalledByNative
-    private static boolean hasCustomFocusRingColor() {
-        return getInstance().hasCustomFocusRingColorInternal();
-    }
-
-    @CalledByNative
-    private static int getFocusRingColor() {
-        return getInstance().getFocusRingColorInternal();
-    }
-
-    @CalledByNative
-    private static boolean hasCustomMinimumStrokeWidthForFocusRing() {
-        return getInstance().hasCustomMinimumStrokeWidthForFocusRingInternal();
-    }
-
-    @CalledByNative
-    private static float getMinimumStrokeWidthForFocusRing() {
-        return getInstance().getMinimumStrokeWidthForFocusRingInternal();
-    }
-
-    protected UiConstants() {}
-
-    protected boolean isFocusRingOutsetInternal() {
-        return false;
-    }
-
-    protected boolean hasCustomFocusRingColorInternal() {
-        return false;
-    }
-
-    protected int getFocusRingColorInternal() {
-        assert false;
-        return 0;
-    }
-
-    protected boolean hasCustomMinimumStrokeWidthForFocusRingInternal() {
-        return false;
-    }
-
-    protected float getMinimumStrokeWidthForFocusRingInternal() {
-        assert false;
-        return 1.0f;
-    }
-}