[aw] Fix exception handling in scrollContainerViewTo.

Change-Id: Ic3a97e5da2203d52d20de5f0a72f28675c2c8333
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2398543Reviewed-by: Richard Coles <torne@chromium.org>
Commit-Queue: Anna Malova <amalova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814176}

android_webview/java/src/org/chromium/android_webview/AwContents.java

@@ -732,7 +732,14 @@ public class AwContents implements SmartClipProvider {
 
         @Override
         public void scrollContainerViewTo(int x, int y) {
-            mInternalAccessAdapter.super_scrollTo(x, y);
+            try {
+                mInternalAccessAdapter.super_scrollTo(x, y);
+            } catch (Throwable e) {
+                AwThreadUtils.postToCurrentLooper(() -> {
+                    Log.e(TAG, "The following exception was raised by scrollContainerViewTo:");
+                    throw e;
+                });
+            }
         }
 
         @Override