Revert "ViewRoot class for event forwarding on Android"

ui/android/java/src/org/chromium/ui/base/ViewRoot.java

Index: ui/android/java/src/org/chromium/ui/base/ViewRoot.java
diff --git a/ui/android/java/src/org/chromium/ui/base/ViewRoot.java b/ui/android/java/src/org/chromium/ui/base/ViewRoot.java
deleted file mode 100644
index 291c3af7b78f7afa2914567073d4756e7bc1f134..0000000000000000000000000000000000000000
--- a/ui/android/java/src/org/chromium/ui/base/ViewRoot.java
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright 2017 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.ui.base;
-
-import android.view.MotionEvent;
-
-import org.chromium.base.annotations.JNINamespace;
-
-/**
- * Class used to forward view, input events down to native.
- * TODO(jinsukkim): Hook this up to UI event forwarding flow and substitute WindowAndroid.
- */
-@JNINamespace("ui")
-public class ViewRoot {
-
-    private final WindowAndroid mWindowAndroid;
-
-    // The corresponding native instance. This class can only be used while
-    // the native instance is alive.
-    // This is initialized lazily. Use {@link getNativePtr()} rather than
-    // accessing it directly.
-    private long mNativeView;
-
-    public static ViewRoot create(WindowAndroid window) {
-        if (window == null) throw new IllegalArgumentException("WindowAndroid should not be null");
-        return new ViewRoot(window);
-    }
-
-    private ViewRoot(WindowAndroid window) {
-        mWindowAndroid = window;
-    }
-
-    public WindowAndroid getWindowAndroid() {
-        return mWindowAndroid;
-    }
-
-    public boolean onTouchEvent(MotionEvent event, boolean isTouchHandleEvent) {
-        final int pointerCount = event.getPointerCount();
-
-        float[] touchMajor = {event.getTouchMajor(),
-                              pointerCount > 1 ? event.getTouchMajor(1) : 0};
-        float[] touchMinor = {event.getTouchMinor(),
-                              pointerCount > 1 ? event.getTouchMinor(1) : 0};
-
-        for (int i = 0; i < 2; i++) {
-            if (touchMajor[i] < touchMinor[i]) {
-                float tmp = touchMajor[i];
-                touchMajor[i] = touchMinor[i];
-                touchMinor[i] = tmp;
-            }
-        }
-
-        return nativeOnTouchEvent(getNativePtr(), event,
-                event.getEventTime(), event.getActionMasked(),
-                pointerCount, event.getHistorySize(), event.getActionIndex(),
-                event.getX(), event.getY(),
-                pointerCount > 1 ? event.getX(1) : 0,
-                pointerCount > 1 ? event.getY(1) : 0,
-                event.getPointerId(0), pointerCount > 1 ? event.getPointerId(1) : -1,
-                touchMajor[0], touchMajor[1],
-                touchMinor[0], touchMinor[1],
-                event.getOrientation(), pointerCount > 1 ? event.getOrientation(1) : 0,
-                event.getAxisValue(MotionEvent.AXIS_TILT),
-                pointerCount > 1 ? event.getAxisValue(MotionEvent.AXIS_TILT, 1) : 0,
-                event.getRawX(), event.getRawY(),
-                event.getToolType(0),
-                pointerCount > 1 ? event.getToolType(1) : MotionEvent.TOOL_TYPE_UNKNOWN,
-                event.getButtonState(),
-                event.getMetaState(),
-                isTouchHandleEvent);
-    }
-
-    public long getNativePtr() {
-        if (mNativeView == 0) mNativeView = nativeInit(mWindowAndroid.getNativePointer());
-        return mNativeView;
-    }
-
-    public void destroy() {
-        if (mNativeView != 0) {
-            nativeDestroy(mNativeView);
-            mNativeView = 0;
-        }
-    }
-
-    private native long nativeInit(long windowNativePointer);
-    private native void nativeDestroy(long nativeViewRoot);
-
-    // All touch events (including flings, scrolls etc) accept coordinates in physical pixels.
-    private native boolean nativeOnTouchEvent(
-            long nativeViewRoot, MotionEvent event,
-            long timeMs, int action, int pointerCount, int historySize, int actionIndex,
-            float x0, float y0, float x1, float y1,
-            int pointerId0, int pointerId1,
-            float touchMajor0, float touchMajor1,
-            float touchMinor0, float touchMinor1,
-            float orientation0, float orientation1,
-            float tilt0, float tilt1,
-            float rawX, float rawY,
-            int androidToolType0, int androidToolType1,
-            int androidButtonState, int androidMetaState,
-            boolean isTouchHandleEvent);
-}