Android: Add haptic feedback on back/forward navigations

This CL adds haptic feedback to basic back/forward gesture navigation
UI when edge swipe is made to the point where the action will be
triggered.

Bug: 992997
Change-Id: I5af8ac7513091afc5ea667727d376214fd39fb22
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1772780Reviewed-by: Donn Denman <donnd@chromium.org>
Commit-Queue: Jinsuk Kim <jinsukkim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#690997}

chrome/android/java/src/org/chromium/chrome/browser/gesturenav/SideSlideLayout.java

@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.gesturenav;
 
 import android.content.Context;
+import android.view.HapticFeedbackConstants;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -299,7 +300,10 @@ public class SideSlideLayout extends ViewGroup {
 
         // Tint the arrow blue when swiped enough to initiate navigation if released.
         boolean navigating = willNavigate();
-        if (navigating != mWillNavigate) mArrowView.setImageTint(navigating);
+        if (navigating != mWillNavigate) {
+            mArrowView.setImageTint(navigating);
+            if (navigating) performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP);
+        }
         mWillNavigate = navigating;
 
         if (mCloseIndicatorEnabled) {