Migrate BS utility classes to GitLab UI

This also fixes a small CSS regression in the location icon alignment

app/assets/javascripts/vue_shared/components/user_popover/user_popover.vue

@@ -50,11 +50,11 @@ export default {
 <template>
   <!-- 200ms delay so not every mouseover triggers Popover -->
   <gl-popover :target="target" :delay="200" boundary="viewport" triggers="hover" placement="top">
-    <div class="user-popover d-flex">
-      <div class="p-1 flex-shrink-1">
-        <user-avatar-image :img-src="user.avatarUrl" :size="60" css-classes="mr-2" />
+    <div class="gl-p-3 gl-line-height-normal gl-display-flex" data-testid="user-popover">
+      <div class="gl-p-2 flex-shrink-1">
+        <user-avatar-image :img-src="user.avatarUrl" :size="60" css-classes="gl-mr-3!" />
       </div>
-      <div class="p-1 w-100">
+      <div class="gl-p-2 gl-w-full">
         <template v-if="userIsLoading">
           <!-- `gl-skeleton-loading` does not support equal length lines -->
           <!-- This can be migrated to `gl-skeleton-loader` when https://gitlab.com/gitlab-org/gitlab-ui/-/issues/872 is completed -->
@@ -62,33 +62,31 @@ export default {
             v-for="n in $options.maxSkeletonLines"
             :key="n"
             :lines="1"
-            class="animation-container-small mb-1"
+            class="animation-container-small gl-mb-2"
           />
         </template>
         <template v-else>
-          <div class="mb-2">
-            <h5 class="m-0">
+          <div class="gl-mb-3">
+            <h5 class="gl-m-0">
               {{ user.name }}
             </h5>
-            <span class="text-secondary">@{{ user.username }}</span>
+            <span class="gl-text-gray-700">@{{ user.username }}</span>
           </div>
-          <div class="text-secondary">
-            <div v-if="user.bio" class="d-flex mb-1">
-              <icon name="profile" class="category-icon flex-shrink-0" />
-              <span ref="bio" class="ml-1">{{ user.bio }}</span>
+          <div class="gl-text-gray-700">
+            <div v-if="user.bio" class="gl-display-flex gl-mb-2">
+              <icon name="profile" class="gl-text-gray-600 gl-flex-shrink-0" />
+              <span ref="bio" class="gl-ml-2">{{ user.bio }}</span>
             </div>
-            <div v-if="user.workInformation" class="d-flex mb-1">
-              <icon name="work" class="category-icon flex-shrink-0" />
-              <span ref="workInformation" class="ml-1">{{ user.workInformation }}</span>
+            <div v-if="user.workInformation" class="gl-display-flex gl-mb-2">
+              <icon name="work" class="gl-text-gray-600 gl-flex-shrink-0" />
+              <span ref="workInformation" class="gl-ml-2">{{ user.workInformation }}</span>
             </div>
           </div>
-          <div class="js-location text-secondary d-flex">
-            <div v-if="user.location">
-              <icon name="location" class="category-icon flex-shrink-0" />
-              <span class="ml-1">{{ user.location }}</span>
-            </div>
+          <div v-if="user.location" class="js-location gl-text-gray-700 gl-display-flex">
+            <icon name="location" class="gl-text-gray-600 flex-shrink-0" />
+            <span class="gl-ml-2">{{ user.location }}</span>
           </div>
-          <div v-if="statusHtml" class="js-user-status mt-2">
+          <div v-if="statusHtml" class="js-user-status gl-mt-3">
             <span v-html="statusHtml"></span>
           </div>
         </template>

app/assets/stylesheets/components/popover.scss

@@ -100,18 +100,6 @@
   }
 }
 
-/**
-* user_popover component
-*/
-.user-popover {
-  padding: $gl-padding-8;
-  line-height: $gl-line-height;
-
-  .category-icon {
-    color: $gray-600;
-  }
-}
-
 .suggest-gitlab-ci-yml {
   margin-top: -1em;
 

ee/app/assets/javascripts/requirements/components/requirement_item.vue

@@ -216,7 +216,7 @@ export default {
       </div>
     </div>
     <gl-popover :target="getAuthorPopoverTarget()" triggers="hover focus" placement="top">
-      <div class="user-popover p-0 d-flex">
+      <div class="gl-line-height-normal d-flex">
         <div class="p-1 flex-shrink-1">
           <gl-avatar :entity-name="author.name" :alt="author.name" :src="author.avatarUrl" />
         </div>

spec/features/projects/user_sees_user_popover_spec.rb

@@ -19,7 +19,7 @@ RSpec.describe 'User sees user popover', :js do
   subject { page }
 
   describe 'hovering over a user link in a merge request' do
-    let(:popover_selector) { '.user-popover' }
+    let(:popover_selector) { '[data-testid="user-popover"]' }
 
     before do
       visit project_merge_request_path(project, merge_request)