Fixed two bugs related to OOPIFs

Source/web/ChromeClientImpl.cpp

Index: Source/web/ChromeClientImpl.cpp
diff --git a/Source/web/ChromeClientImpl.cpp b/Source/web/ChromeClientImpl.cpp
index d3d4fe791db438b598b0ef4d1c0a22c821674c5f..6dcd9436c0ca1f8e8446fc202039189bcb3fccad 100644
--- a/Source/web/ChromeClientImpl.cpp
+++ b/Source/web/ChromeClientImpl.cpp
@@ -194,6 +194,9 @@ void ChromeClientImpl::takeFocus(WebFocusType type)
 
 void ChromeClientImpl::focusedNodeChanged(Node* fromNode, Node* toNode)
 {
+    if (!m_webView->client())
+        return;
+
     m_webView->client()->focusedNodeChanged(WebNode(fromNode), WebNode(toNode));
 
     WebURL focusURL;