Fix dark mode widget delete button icon color

The ColorStateList needs to be different between the mic button and the
delete button.

Bug: 1054300
Change-Id: I97e88144c359e5c27cecfd7b99509051520a7808
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2067461
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#744123}

chrome/android/java/src/org/chromium/chrome/browser/omnibox/LocationBarLayout.java

@@ -1102,15 +1102,18 @@ public class LocationBarLayout extends FrameLayout
 
         // This will be called between inflation and initialization. For those calls, using a null
         // ColorStateList should have no visible impact to the user.
-        ColorStateList colorStateList = mAssistantVoiceSearchService == null
+        ColorStateList micColorStateList = mAssistantVoiceSearchService == null
                 ? null
                 : mAssistantVoiceSearchService.getMicButtonColorStateList(
                         primaryColor, getContext());
-        ApiCompatibilityUtils.setImageTintList(mMicButton, colorStateList);
-        ApiCompatibilityUtils.setImageTintList(mDeleteButton, colorStateList);
+        ApiCompatibilityUtils.setImageTintList(mMicButton, micColorStateList);
 
         final boolean useDarkColors =
                 !ColorUtils.shouldUseLightForegroundOnBackground(primaryColor);
+        ColorStateList colorStateList =
+                ChromeColors.getPrimaryIconTint(getContext(), !useDarkColors);
+        ApiCompatibilityUtils.setImageTintList(mDeleteButton, colorStateList);
+
         // If the URL changed colors and is not focused, update the URL to account for the new
         // color scheme.
         if (mUrlCoordinator.setUseDarkTextColors(useDarkColors) && !mUrlBar.hasFocus()) {