Renamed `embedding-csp` HTTP request header to `required-csp`.

third_party/WebKit/LayoutTests/external/wpt/content-security-policy/embedded-enforcement/support/testharness-helper.sub.js

Index: third_party/WebKit/LayoutTests/external/wpt/content-security-policy/embedded-enforcement/support/testharness-helper.sub.js
diff --git a/third_party/WebKit/LayoutTests/external/wpt/content-security-policy/embedded-enforcement/support/testharness-helper.sub.js b/third_party/WebKit/LayoutTests/external/wpt/content-security-policy/embedded-enforcement/support/testharness-helper.sub.js
index c5f07e9bd458c55ab6542beb5f85972582a73544..bd7f255616e14feeff095d94fe145afdb3f64df3 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/content-security-policy/embedded-enforcement/support/testharness-helper.sub.js
+++ b/third_party/WebKit/LayoutTests/external/wpt/content-security-policy/embedded-enforcement/support/testharness-helper.sub.js
@@ -6,7 +6,7 @@ const Host = {
 const PolicyHeader = {
   CSP: "echo-policy.py?policy=",
   CSP_MULTIPLE: "echo-policy-multiple.py",
-  EMBEDDING_CSP: "echo-embedding-csp.py",
+  REQUIRED_CSP: "echo-required-csp.py",
   ALLOW_CSP_FROM: "echo-allow-csp-from.py",
 };
 
@@ -68,16 +68,16 @@ function generateUrlWithAllowCSPFrom(host, allowCspFrom) {
   return url;
 }
 
-function assert_embedding_csp(t, url, csp, expected) {
+function assert_required_csp(t, url, csp, expected) {
   var i = document.createElement('iframe');
   if(csp)
     i.csp = csp;
   i.src = url;
 
   window.addEventListener('message', t.step_func(e => {
-    if (e.source != i.contentWindow || !('embedding_csp' in e.data))
+    if (e.source != i.contentWindow || !('required_csp' in e.data))
         return;
-    assert_equals(expected, e.data['embedding_csp']);
+    assert_equals(expected, e.data['required_csp']);
     t.done();
   }));