Tint NewTabButton(+) for tabgrid

Add tint for NewTabButton(+) in top tool bar when tabgrid is enabled.

Bug: 946290
Change-Id: I4e1ad838789b63720465f818294f82042b2a6475
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1559209Reviewed-by: Matthew Jones <mdjones@chromium.org>
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Commit-Queue: Yue Zhang <yuezhanggg@google.com>
Cr-Commit-Position: refs/heads/master@{#649653}

chrome/android/java/src/org/chromium/chrome/browser/toolbar/NewTabButton.java

@@ -18,6 +18,7 @@ import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.chrome.browser.toolbar.IncognitoStateProvider.IncognitoStateObserver;
 import org.chromium.chrome.browser.util.AccessibilityUtil;
+import org.chromium.chrome.browser.util.FeatureUtilities;
 import org.chromium.ui.base.DeviceFormFactor;
 import org.chromium.ui.widget.ChromeImageButton;
 
@@ -94,7 +95,9 @@ public class NewTabButton
                 DeviceFormFactor.isNonMultiDisplayContextOnTablet(getContext())
                 || ((DeviceClassManager.enableAccessibilityLayout()
                             || ChromeFeatureList.isEnabled(
-                                    ChromeFeatureList.HORIZONTAL_TAB_SWITCHER_ANDROID))
+                                    ChromeFeatureList.HORIZONTAL_TAB_SWITCHER_ANDROID)
+                            || FeatureUtilities.isTabGroupsAndroidEnabled()
+                            || FeatureUtilities.isGridTabSwitcherEnabled())
                         && mIsIncognito);
         ApiCompatibilityUtils.setImageTintList(
                 this, shouldUseLightMode ? mLightModeTint : mDarkModeTint);