Introduce Document::unthrottledTaskRunner()

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 179c42293ac068b106321168aaac0d7ce5566771..bd538ad457614428f968bc40cb17235a413ed817 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -5895,6 +5895,17 @@ WebTaskRunner* Document::timerTaskRunner() const
     return Platform::current()->currentThread()->scheduler()->timerTaskRunner();
 }
 
+WebTaskRunner* Document::unthrottledTaskRunner() const
+{
+    if (frame())
+        return m_frame->frameScheduler()->unthrottledTaskRunner();
+    if (m_importsController)
+        return m_importsController->master()->unthrottledTaskRunner();
+    if (m_contextDocument)
+        return m_contextDocument->unthrottledTaskRunner();
+    return Platform::current()->currentThread()->getWebTaskRunner();
+}
+
 void Document::enforceInsecureRequestPolicy(WebInsecureRequestPolicy policy)
 {
     // Combine the new policy with the existing policy, as a base policy may be