[results feed] Refactoring: change names of fields in try results code

This change only changes the names of some fields and local variables

Change-Id: Icb8ad5ac63e3c02632f18fd0f74366859dd3444f
Reviewed-on: https://dart-review.googlesource.com/c/dart_ci/+/130802
Reviewed-by: Alexander Thomas <athom@google.com>
diff --git a/results_feed/lib/src/components/try_results_component.dart b/results_feed/lib/src/components/try_results_component.dart
index 128f8bf..1b9ecdb 100644
--- a/results_feed/lib/src/components/try_results_component.dart
+++ b/results_feed/lib/src/components/try_results_component.dart
@@ -39,15 +39,15 @@
   TryDataService _tryDataService;
   ApplicationRef _applicationRef;
 
-  int change;
-  int patch;
-  ReviewInfo changeInfo;
+  int review;
+  int patchset;
+  ReviewInfo reviewInfo;
   ChangeGroup changeGroup = ChangeGroup(null, {}, [], []);
-  int cachedPatch;
-  int cachedChange;
+  int cachedReview;
+  int cachedPatchset;
   List<Change> changes;
   List<Comment> comments;
-  IntRange range = IntRange(1, 0);
+  final IntRange emptyRange = IntRange(1, 0);
   bool updating = false;
   bool updatePending = false;
   bool _approving = false;
@@ -82,7 +82,7 @@
             : changeGroup.comments.last.baseComment ??
                 changeGroup.comments.last.id,
         [for (Change result in selected) result.id],
-        changeInfo.review);
+        reviewInfo.review);
     comments
       ..add(comment)
       ..sort();
@@ -109,16 +109,16 @@
   }
 
   Future<void> update() async {
-    if (change == null) return;
-    if (changeInfo == null || change != changeInfo.review) {
-      changeInfo = await _tryDataService.reviewInfo(change);
+    if (review == null) return;
+    if (reviewInfo == null || review != reviewInfo.review) {
+      reviewInfo = await _tryDataService.fetchReviewInfo(review);
     }
-    if (change != cachedChange || patch != cachedPatch) {
-      changes = await _tryDataService.changes(changeInfo, patch);
-      comments = await _tryDataService.comments(changeInfo.review);
+    if (review != cachedReview || patchset != cachedPatchset) {
+      changes = await _tryDataService.changes(reviewInfo, patchset);
+      comments = await _tryDataService.comments(reviewInfo.review);
       comments..sort();
-      cachedChange = change;
-      cachedPatch = patch;
+      cachedReview = review;
+      cachedPatchset = patchset;
       changeGroup = ChangeGroup(null, {}, comments, changes);
     }
   }
@@ -126,9 +126,9 @@
   @override
   void onActivate(_, RouterState current) {
     final changeParam = current.parameters['cl'];
-    change = changeParam == null ? null : int.parse(changeParam);
+    review = changeParam == null ? null : int.parse(changeParam);
     final patchParam = current.parameters['patch'];
-    patch = patchParam == null ? null : int.parse(patchParam);
+    patchset = patchParam == null ? null : int.parse(patchParam);
     tryUpdate();
   }
 }
diff --git a/results_feed/lib/src/components/try_results_component.html b/results_feed/lib/src/components/try_results_component.html
index 9c56399..bf9c4e3 100644
--- a/results_feed/lib/src/components/try_results_component.html
+++ b/results_feed/lib/src/components/try_results_component.html
@@ -1,17 +1,17 @@
-<div *ngIf="changeInfo != null">
+<div *ngIf="reviewInfo != null">
   <h2>
-    <a href="http://dart-review.googlesource.com/c/sdk/+/{{change}}/{{patch}}"
-       target="_blank">{{changeInfo.title}}</a>
+    <a href="http://dart-review.googlesource.com/c/sdk/+/{{review}}/{{patchset}}"
+       target="_blank">{{reviewInfo.title}}</a>
   </h2>
 
   <h2 *ngIf="changeGroup.changes.isEmpty">No changed test results</h2>
   <results-panel *ngIf="!approving"
       [changes]="changeGroup.changes"
-      [range]="range">
+      [range]="emptyRange">
   </results-panel>
   <results-selector-panel *ngIf="approving"
       [changes]="changeGroup.changes"
-      [range]="range"
+      [range]="emptyRange"
       [selected]="selected"
       failuresOnly>
   </results-selector-panel>
diff --git a/results_feed/lib/src/services/try_data_service.dart b/results_feed/lib/src/services/try_data_service.dart
index 539ddc3..6efc398 100644
--- a/results_feed/lib/src/services/try_data_service.dart
+++ b/results_feed/lib/src/services/try_data_service.dart
@@ -13,24 +13,24 @@
 
   bool get isLoggedIn => _firestoreService.isLoggedIn;
 
-  Future<List<Change>> changes(ReviewInfo changeInfo, int patch) async {
-    final patchsets = changeInfo.patchsets;
-    if (patchsets.length < patch) return [];
+  Future<List<Change>> changes(ReviewInfo reviewInfo, int patchset) async {
+    final patchsets = reviewInfo.patchsets;
+    if (patchsets.length < patchset) return [];
     // Patchset numbers start at 1, not 0.
-    int patchsetGroup = patchsets[patch - 1].patchsetGroup;
+    int patchsetGroup = patchsets[patchset - 1].patchsetGroup;
     // Workaround while [ ... await foo() ] does not work in dartdevc.
     // Issue https://github.com/dart-lang/sdk/issues/38896
     final docs = [];
-    for (var patchset in patchsets) {
-      if (patchset.patchsetGroup == patchsetGroup) {
+    for (var identicalPatchset in patchsets) {
+      if (identicalPatchset.patchsetGroup == patchsetGroup) {
         docs.addAll(await _firestoreService.fetchTryChanges(
-            changeInfo.review, patchset.number));
+            reviewInfo.review, identicalPatchset.number));
       }
     }
     return [for (final data in docs) Change.fromDocument(data)];
   }
 
-  Future<ReviewInfo> reviewInfo(int review) async {
+  Future<ReviewInfo> fetchReviewInfo(int review) async {
     final doc = await _firestoreService.fetchReviewInfo(review);
     if (doc.exists) {
       return ReviewInfo.fromDocument(doc)