[Experimental Framework] Make the OriginTrialContext a member of ExecutionContext

third_party/WebKit/Source/core/origin_trials/DocumentOriginTrialContext.cpp

Index: third_party/WebKit/Source/core/origin_trials/DocumentOriginTrialContext.cpp
diff --git a/third_party/WebKit/Source/core/origin_trials/DocumentOriginTrialContext.cpp b/third_party/WebKit/Source/core/origin_trials/DocumentOriginTrialContext.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..536aa847203ddc8be9eeb4d7d6c13141c8b7df27
--- /dev/null
+++ b/third_party/WebKit/Source/core/origin_trials/DocumentOriginTrialContext.cpp
@@ -0,0 +1,33 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/origin_trials/DocumentOriginTrialContext.h"
+
+#include "core/dom/ElementTraversal.h"
+#include "core/html/HTMLHeadElement.h"
+#include "core/html/HTMLMetaElement.h"
+
+namespace blink {
+
+class Document;
+
+DocumentOriginTrialContext::DocumentOriginTrialContext(Document* document)
+    : m_parent(document)
+{
+}
+
+Vector<String> DocumentOriginTrialContext::getTokens()
+{
+    // When in a document, the tokens are provided in a meta tag
+    Vector<String> tokens;
+    HTMLHeadElement* head = m_parent->head();
+    for (HTMLMetaElement* metaElement = head ? Traversal<HTMLMetaElement>::firstChild(*head) : 0; metaElement; metaElement = Traversal<HTMLMetaElement>::nextSibling(*metaElement)) {

[jbroman, 2016/03/01 23:29:21]

nit: still like iterating over Traversal<HTMLMetaElement>::childrenOf(...)
instead of writing out the firstChild and nextSibling calls

[iclelland, 2016/03/03 21:47:01]

Sure; this is older code, just moved to this class, but easy enough to change.
Thanks, done.

+        if (equalIgnoringCase(metaElement->name(), kTrialMetaTagName)) {
+            tokens.append(metaElement->content());
+        }
+    }
+    return tokens;
+}
+
+} // namespace blink