Introduce PaintWorkletGlobalScope, rename renderWorklet attribute to paintWorklet.

third_party/WebKit/LayoutTests/http/tests/worklet/import.html

Index: third_party/WebKit/LayoutTests/http/tests/worklet/import.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/worklet/import.html b/third_party/WebKit/LayoutTests/http/tests/worklet/import.html
index 3e44c5ff2faedd85ba4e53fa84a531b82e9dce4d..2b99c5c254cbd33e3b7dab0b0d3c1e73a1771b3b 100644
--- a/third_party/WebKit/LayoutTests/http/tests/worklet/import.html
+++ b/third_party/WebKit/LayoutTests/http/tests/worklet/import.html
@@ -8,7 +8,7 @@
 <script>
     promise_test(function() {
 
-        return renderWorklet.import('resources/empty-worklet-script.js').then(function(undefined_arg) {
+        return paintWorklet.import('resources/empty-worklet-script.js').then(function(undefined_arg) {
             assert_equals(undefined_arg, undefined, 'Promise should resolve with no arguments.');
         }).catch(function(error) {
             assert_unreached('unexpected rejection: ' + error);
@@ -18,7 +18,7 @@
 
     promise_test(function() {
 
-        return renderWorklet.import('resources/throwing-worklet-script.js').then(function(undefined_arg) {
+        return paintWorklet.import('resources/throwing-worklet-script.js').then(function(undefined_arg) {
             assert_equals(undefined_arg, undefined, 'Promise should resolve with no arguments.');
         }).catch(function(error) {
             assert_unreached('unexpected rejection: ' + error);
@@ -28,7 +28,7 @@
 
     promise_test(function() {
 
-        return renderWorklet.import('non-existant-worklet-script.js').then(function() {
+        return paintWorklet.import('non-existant-worklet-script.js').then(function() {
             assert_unreached('import should fail.');
         }).catch(function(error) {
             assert_equals(error.name, 'NetworkError', 'error should be a NetworkError.');
@@ -38,7 +38,7 @@
 
     promise_test(function() {
 
-        return renderWorklet.import('http://invalid:123$').then(function() {
+        return paintWorklet.import('http://invalid:123$').then(function() {
             assert_unreached('import should fail.');
         }).catch(function(error) {
             assert_equals(error.name, 'SyntaxError', 'error should be a SyntaxError.');