Credential Manager: Wire up the client.

Source/modules/credentialmanager/CredentialManagerClient.cpp

Index: Source/modules/credentialmanager/CredentialManagerClient.cpp
diff --git a/Source/modules/credentialmanager/CredentialManagerClient.cpp b/Source/modules/credentialmanager/CredentialManagerClient.cpp
index 76a99b08eb16ebb9ea47b126f88634ba6dae4bab..325fcf6b3e2a17329207d843ac5664b265bd7115 100644
--- a/Source/modules/credentialmanager/CredentialManagerClient.cpp
+++ b/Source/modules/credentialmanager/CredentialManagerClient.cpp
@@ -5,6 +5,9 @@
 #include "config.h"
 #include "modules/credentialmanager/CredentialManagerClient.h"
 
+#include "bindings/core/v8/ScriptState.h"
+#include "core/dom/Document.h"
+#include "core/dom/ExecutionContext.h"
 #include "core/page/Page.h"
 
 namespace blink {
@@ -25,6 +28,14 @@ const char* CredentialManagerClient::supplementName()
 }
 
 // static
+CredentialManagerClient* CredentialManagerClient::from(ExecutionContext* executionContext)
+{
+    if (!executionContext->isDocument() || !toDocument(executionContext)->page())
+        return 0;
+    return from(toDocument(executionContext)->page());
+}
+
+// static
 CredentialManagerClient* CredentialManagerClient::from(Page* page)
 {
     return static_cast<CredentialManagerClient*>(WillBeHeapSupplement<Page>::from(page, supplementName()));