Avoid setting search chip on non-tab cards in Grid tab switcher

Before this CL, search chip properties might be set on IPH cards in the
Grid tab switcher, and triggers an assertion error.

To make debugging easier, the content dump of the offending model is
added to the error message.

Bug: 1076546
Change-Id: I8bf110050226a8462881fba069632a5e9380672f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2363773
Commit-Queue: Xi Han <hanxi@chromium.org>
Reviewed-by: Xi Han <hanxi@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803942}

chrome/android/features/tab_ui/java/src/org/chromium/chrome/browser/tasks/tab_management/TabListMediator.java

@@ -802,6 +802,7 @@ class TabListMediator {
             mTemplateUrlObserver = () -> {
                 mSearchChipIconDrawableId = getSearchChipIconDrawableId();
                 for (int i = 0; i < mModel.size(); i++) {
+                    if (mModel.get(i).model.get(CARD_TYPE) != TAB) continue;
                     mModel.get(i).model.set(
                             TabProperties.SEARCH_CHIP_ICON_DRAWABLE_ID, mSearchChipIconDrawableId);
                 }

ui/android/java/src/org/chromium/ui/modelutil/PropertyModel.java

@@ -276,7 +276,8 @@ public class PropertyModel extends PropertyObservable<PropertyKey> {
     @RemovableInRelease
     private void validateKey(PropertyKey key) {
         if (!mData.containsKey(key)) {
-            throw new IllegalArgumentException("Invalid key passed in: " + key);
+            throw new IllegalArgumentException(
+                    "Invalid key passed in: " + key + ". Current data is: " + mData.toString());
         }
     }