Remove more superfluous calls to clear frame views during destruction.

third_party/WebKit/Source/core/frame/RemoteFrame.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 "core/frame/RemoteFrame.h"
 
 #include "bindings/core/v8/WindowProxy.h"
 #include "bindings/core/v8/WindowProxyManager.h"
 #include "core/dom/RemoteSecurityContext.h"
@@ skipping 22 matching lines @@
 {
 }
 
 PassRefPtrWillBeRawPtr<RemoteFrame> RemoteFrame::create(RemoteFrameClient* client, FrameHost* host, FrameOwner* owner)
 {
     return adoptRefWillBeNoop(new RemoteFrame(client, host, owner));
 }
 
 RemoteFrame::~RemoteFrame()
 {
+    ASSERT(!m_view);
 }
 
 DEFINE_TRACE(RemoteFrame)
 {
     visitor->trace(m_view);
     visitor->trace(m_securityContext);
     visitor->trace(m_domWindow);
     visitor->trace(m_windowProxyManager);
     Frame::trace(visitor);
 }
@@ skipping 129 matching lines @@
     ASSERT(owner());
     toHTMLFrameOwnerElement(owner())->setNeedsCompositingUpdate();
 }
 
 RemoteFrameView* RemoteFrame::view() const
 {
     return m_view.get();
 }
 
 } // namespace blink