Bookmarks WebUI: Allow multi-select by toggling selection using spacebar

Bug: 1142077
Change-Id: I7f77980b2fd1ad1f50f94adaa63fa537c3199037
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2559159
Commit-Queue: John Lee <johntlee@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#831142}

chrome/browser/resources/bookmarks/item.js

@@ -194,6 +194,12 @@ Polymer({
       this.focus();
     } else if (e.key === 'ArrowRight') {
       this.$.menuButton.focus();
+    } else if (e.key === ' ') {
+      this.dispatch(selectItem(this.itemId, this.getState(), {
+        clear: false,
+        range: false,
+        toggle: true,
+      }));
     }
   },
 

chrome/browser/resources/bookmarks/list.js

@@ -297,17 +297,6 @@ Polymer({
         if (e.shiftKey && this.getState().selection.anchor === null) {
           this.dispatch(updateAnchor(this.displayedIds_[oldFocusedIndex]));
         }
-
-        // If the focus moved from something other than a Ctrl + move event,
-        // update the selection.
-        const config = {
-          clear: !cursorModifier,
-          range: e.shiftKey,
-          toggle: false,
-        };
-
-        this.dispatch(selectItem(
-            this.displayedIds_[focusedIndex], this.getState(), config));
       }
     }