Cleanup various WebView/WebFrame APIs to properly handle remote frames.

Source/web/WebRemoteFrameImpl.cpp

Index: Source/web/WebRemoteFrameImpl.cpp
diff --git a/Source/web/WebRemoteFrameImpl.cpp b/Source/web/WebRemoteFrameImpl.cpp
index bee41e1ef522f5a3e573eab14a5597b7def78498..0df2268e7da720cce54081806e790d66c5c9fa3f 100644
--- a/Source/web/WebRemoteFrameImpl.cpp
+++ b/Source/web/WebRemoteFrameImpl.cpp
@@ -245,24 +245,6 @@ void WebRemoteFrameImpl::removeChild(WebFrame* frame)
     m_ownersForChildren.remove(frame);
 }
 
-WebFrame* WebRemoteFrameImpl::traversePrevious(bool wrap) const
-{
-    ASSERT_NOT_REACHED();
-    return 0;
-}
-
-WebFrame* WebRemoteFrameImpl::traverseNext(bool wrap) const
-{
-    ASSERT_NOT_REACHED();
-    return 0;
-}
-
-WebFrame* WebRemoteFrameImpl::findChildByName(const WebString&) const
-{
-    ASSERT_NOT_REACHED();
-    return 0;
-}
-
 WebDocument WebRemoteFrameImpl::document() const
 {
     ASSERT_NOT_REACHED();
@@ -839,5 +821,12 @@ void WebRemoteFrameImpl::setWebCoreFrame(PassRefPtr<RemoteFrame> frame)
     m_frame = frame;
 }
 
+WebRemoteFrameImpl* WebRemoteFrameImpl::fromFrame(RemoteFrame& frame)
+{
+    if (!frame.client())
+        return 0;
+    return static_cast<RemoteFrameClient*>(frame.client())->webFrame();
+}
+
 } // namespace blink