Always add braces to single-line if-statements

The Chromium/Google style guides does not enforce curly braces for
single-line if-statements, but does strongly recommend doing so. Adding
braces will improve code readability, by visually separating code
blocks. This will also prevent issues where accidental additions are
pushed to the "else"-clause instead of in the if-block.

This CL also updates the presubmit `eslint` to run the fix with the
correct configuration. It will now fix all issues it can fix.

Change-Id: I4b616f21a99393f168dec743c0bcbdc7f5db04a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1821526
Commit-Queue: Tim Van der Lippe <[email protected]>
Reviewed-by: Yang Guo <[email protected]>
Reviewed-by: Jeff Fisher <[email protected]>
Cr-Original-Commit-Position: refs/heads/master@{#701070}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 7e0bdbe2d7f9fc2386bfaefda3cc29c66ccc18f9
diff --git a/front_end/animation/AnimationGroupPreviewUI.js b/front_end/animation/AnimationGroupPreviewUI.js
index 3ec7be4..61fb6ac 100644
--- a/front_end/animation/AnimationGroupPreviewUI.js
+++ b/front_end/animation/AnimationGroupPreviewUI.js
@@ -32,8 +32,9 @@
     let duration = 0;
     for (const anim of this._model.animations()) {
       const animDuration = anim.source().delay() + anim.source().duration();
-      if (animDuration > duration)
+      if (animDuration > duration) {
         duration = animDuration;
+      }
     }
     return duration;
   }