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

Source/web/WebRemoteFrameImpl.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "web/WebRemoteFrameImpl.h"
 
 #include "core/frame/FrameOwner.h"
 #include "core/frame/RemoteFrame.h"
 #include "public/platform/WebFloatRect.h"
@@ skipping 227 matching lines @@
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 void WebRemoteFrameImpl::removeChild(WebFrame* frame)
 {
     WebFrame::removeChild(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();
     return WebDocument();
 }
 
 WebPerformance WebRemoteFrameImpl::performance() const
 {
     ASSERT_NOT_REACHED();
     return WebPerformance();
@@ skipping 556 matching lines @@
     child->setWebCoreFrame(childFrame);
     childFrame->tree().setName(name, AtomicString());
     return child;
 }
 
 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