[cleanup] Replace {keysArray} with {keys} plus spread operator

This CL is part of the effort to clean up prototype wrangling in
DevTools's utilities.js. After this CL we are able to remove
{keysArray} from Map.

Bug: chromium:1050549
Change-Id: I59792c1dfb5f2a8c78c3a427e55e5497c33a8afc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2051843Reviewed-by: Tim van der Lippe <tvanderlippe@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#740630}

third_party/blink/web_tests/http/tests/devtools/oopif/oopif-performance-monitor.js

@@ -10,7 +10,7 @@
   let metrics = (await model.requestMetrics()).metrics;
 
   TestRunner.addResult('\nMetrics reported:');
-  TestRunner.addResults(metrics.keysArray().sort());
+  TestRunner.addResults([...metrics.keys()].sort());
 
   TestRunner.completeTest();
 })();

third_party/blink/web_tests/http/tests/devtools/persistence/persistence-merge-editor-tabs.js

@@ -78,7 +78,7 @@
 
   function dumpEditorTabs() {
     var editorContainer = UI.panels.sources._sourcesView._editorContainer;
-    var openedUISourceCodes = editorContainer._tabIds.keysArray();
+    var openedUISourceCodes = [...editorContainer._tabIds.keys()];
     openedUISourceCodes.sort((a, b) => a.url().compareTo(b.url()));
     TestRunner.addResult('Opened tabs: ');
     for (const code of openedUISourceCodes)

third_party/blink/web_tests/http/tests/devtools/persistence/persistence-switch-editor-tab.js

@@ -40,7 +40,7 @@
 
   function dumpEditorTabs() {
     var editorContainer = UI.panels.sources._sourcesView._editorContainer;
-    var openedUISourceCodes = editorContainer._tabIds.keysArray();
+    var openedUISourceCodes = [...editorContainer._tabIds.keys()];
     openedUISourceCodes.sort((a, b) => a.url().compareTo(b.url()));
     TestRunner.addResult('Opened tabs: ');
     for (const code of openedUISourceCodes)

third_party/blink/web_tests/http/tests/devtools/persistence/persistence-tabbed-editor-opens-filesystem-uisourcecode.js

@@ -29,7 +29,7 @@
 
   function dumpEditorTabs(title) {
     var editorContainer = UI.panels.sources._sourcesView._editorContainer;
-    var openedUISourceCodes = editorContainer._tabIds.keysArray();
+    var openedUISourceCodes = [...editorContainer._tabIds.keys()];
     openedUISourceCodes.sort((a, b) => a.url().compareTo(b.url()));
     TestRunner.addResult(title);
     for (const code of openedUISourceCodes)

third_party/blink/web_tests/http/tests/devtools/sources/debugger-ui/continue-to-location-markers-in-top-level-function.js

@@ -42,7 +42,7 @@
     var debuggerPlugin = SourcesTestRunner.debuggerPlugin(currentFrame);
     var decorations = debuggerPlugin._continueToLocationDecorations;
     var lines = [];
-    for (var decoration of decorations.keysArray()) {
+    for (var decoration of decorations.keys()) {
       var find = decoration.find();
       var line = find.from.line;
       var text = currentFrame.textEditor.line(line).substring(find.from.ch, find.to.ch);

third_party/blink/web_tests/http/tests/devtools/sources/debugger-ui/continue-to-location-markers.js

@@ -111,7 +111,7 @@
     var debuggerPlugin = SourcesTestRunner.debuggerPlugin(currentFrame);
     var decorations = debuggerPlugin._continueToLocationDecorations;
     var lines = [];
-    for (var decoration of decorations.keysArray()) {
+    for (var decoration of decorations.keys()) {
       var find = decoration.find();
       var line = find.from.line;
       var text = currentFrame.textEditor.line(line).substring(find.from.ch, find.to.ch);

third_party/blink/web_tests/http/tests/devtools/startup/sources/debugger/script-formatter-console.js

@@ -32,7 +32,7 @@
       function didEvaluate() {
         dumpConsoleMessageURLs();
         TestRunner.addResult('Pre-format row message list:');
-        TestRunner.addResult(JSON.stringify(sourceFrame._rowMessageBuckets.keysArray()));
+        TestRunner.addResult(JSON.stringify([...sourceFrame._rowMessageBuckets.keys()]));
         var name = panel.visibleView.uiSourceCode().name();
         scriptFormatter._toggleFormatScriptSource();
         SourcesTestRunner.showScriptSource(name + ':formatted', uiSourceCodeScriptFormatted);
@@ -42,7 +42,7 @@
         dumpConsoleMessageURLs();
         TestRunner.addResult('Post-format row message list:');
         var formattedSourceFrame = panel.visibleView;
-        TestRunner.addResult(JSON.stringify(formattedSourceFrame._rowMessageBuckets.keysArray()));
+        TestRunner.addResult(JSON.stringify([...formattedSourceFrame._rowMessageBuckets.keys()]));
         next();
       }
     }