Trace looks like:

java.lang.NoClassDefFoundError: org.chromium.build.BuildHooksAndroid
 at org.chromium.incrementalinstall.BootstrapApplication.getResources(BootstrapApplication.java)
 at android.content.ContextWrapper.getResources(ContextWrapper.java:89)
 at android.appwidget.AppWidgetManager.<init>(AppWidgetManager.java:354)
 at android.appwidget.AppWidgetManager.getInstance(AppWidgetManager.java:345)
 at org.chromium.chrome.browser.bookmarkswidget.BookmarkWidgetProvider.onReceive(BookmarkWidgetProvider.java:36)
 at android.app.ActivityThread.handleReceiver(ActivityThread.java:2407)
 at android.app.ActivityThread.access$1700(ActivityThread.java:135)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loop(Looper.java:136)
 at android.app.ActivityThread.main(ActivityThread.java:5001)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:515)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
 at dalvik.system.NativeStart.main(Native Method)

Crashes occur after syncing past https://chromium-review.googlesource.com/c/chromium/src/+/614061.