Revert of Update Blink to use the tree scope info on WebFrame for scoping checks.

Source/web/WebRemoteFrameImpl.cpp

Index: Source/web/WebRemoteFrameImpl.cpp
diff --git a/Source/web/WebRemoteFrameImpl.cpp b/Source/web/WebRemoteFrameImpl.cpp
index 64e9f01cbc4fbdd38bcc1d0a2f92e4da2161ba8f..030c9941ebe56453c28da1196434ee071deb3cf0 100644
--- a/Source/web/WebRemoteFrameImpl.cpp
+++ b/Source/web/WebRemoteFrameImpl.cpp
@@ -22,6 +22,11 @@
 
 namespace blink {
 
+WebRemoteFrame* WebRemoteFrame::create(WebRemoteFrameClient* client)
+{
+    return WebRemoteFrame::create(WebTreeScopeType::Document, client);
+}
+
 WebRemoteFrame* WebRemoteFrame::create(WebTreeScopeType scope, WebRemoteFrameClient* client)
 {
     return WebRemoteFrameImpl::create(scope, client);
@@ -711,6 +716,11 @@
 {
     ASSERT_NOT_REACHED();
     return WebString();
+}
+
+WebLocalFrame* WebRemoteFrameImpl::createLocalChild(const WebString& name, WebSandboxFlags sandboxFlags, WebFrameClient* client, WebFrame* previousSibling)
+{
+    return createLocalChild(WebTreeScopeType::Document, name, sandboxFlags, client, previousSibling);
 }
 
 WebLocalFrame* WebRemoteFrameImpl::createLocalChild(WebTreeScopeType scope, const WebString& name, WebSandboxFlags sandboxFlags, WebFrameClient* client, WebFrame* previousSibling)
@@ -738,6 +748,11 @@
     m_frame->tree().setName(name, nullAtom);
 }
 
+WebRemoteFrame* WebRemoteFrameImpl::createRemoteChild(const WebString& name, WebSandboxFlags sandboxFlags, WebRemoteFrameClient* client)
+{
+    return createRemoteChild(WebTreeScopeType::Document, name, sandboxFlags, client);
+}
+
 WebRemoteFrame* WebRemoteFrameImpl::createRemoteChild(WebTreeScopeType scope, const WebString& name, WebSandboxFlags sandboxFlags, WebRemoteFrameClient* client)
 {
     WebRemoteFrameImpl* child = toWebRemoteFrameImpl(WebRemoteFrame::create(scope, client));