Introduce DOMWindowClient

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

Index: third_party/WebKit/Source/core/dom/ContextLifecycleObserver.cpp
diff --git a/third_party/WebKit/Source/core/dom/ContextLifecycleObserver.cpp b/third_party/WebKit/Source/core/dom/ContextLifecycleObserver.cpp
index 829c1c0cc3bd92784cb35a71907eb64849b8e5d9..654398a35b80ae4c3f144b2390a3ead74169e713 100644
--- a/third_party/WebKit/Source/core/dom/ContextLifecycleObserver.cpp
+++ b/third_party/WebKit/Source/core/dom/ContextLifecycleObserver.cpp
@@ -5,10 +5,14 @@
 #include "core/dom/ContextLifecycleObserver.h"
 
 #include "core/dom/Document.h"
+#include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 
 namespace blink {
 
+ContextClient::ContextClient(ExecutionContext* executionContext)
+    : m_executionContext(executionContext) {}
+
 ContextClient::ContextClient(LocalFrame* frame)
     : m_executionContext(frame ? frame->document() : nullptr) {}
 
@@ -33,4 +37,22 @@ LocalFrame* ContextLifecycleObserver::frame() const {
              ? toDocument(getExecutionContext())->frame()
              : nullptr;
 }
+
+DOMWindowClient::DOMWindowClient(LocalDOMWindow* window)
+    : m_domWindow(window) {}
+
+DOMWindowClient::DOMWindowClient(LocalFrame* frame)
+    : m_domWindow(frame ? frame->domWindow() : nullptr) {}
+
+LocalDOMWindow* DOMWindowClient::domWindow() const {
+  return m_domWindow && m_domWindow->frame() ? m_domWindow : nullptr;
+}
+
+LocalFrame* DOMWindowClient::frame() const {
+  return m_domWindow ? m_domWindow->frame() : nullptr;
+}
+
+DEFINE_TRACE(DOMWindowClient) {
+  visitor->trace(m_domWindow);
+}
 }