Use full viewport height for layout if URL bar is locked shown or hidden.

third_party/WebKit/Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 503 matching lines @@
 
   void scrollAndRescaleViewports(float scaleFactor,
                                  const IntPoint& mainFrameOrigin,
                                  const FloatPoint& visualViewportOrigin);
 
   float maximumLegiblePageScale() const;
   void refreshPageScaleFactorAfterLayout();
   IntSize contentsSize() const;
 
   void performResize();
-  void resizeViewWhileAnchored(FrameView*,
-                               float browserControlsHeight,
+  void resizeViewWhileAnchored(float browserControlsHeight,
                                bool browserControlsShrinkLayout);
 
   // Overrides the compositor visibility. See the description of
   // m_overrideCompositorVisibility for more details.
   void setCompositorVisibility(bool);
 
   // TODO(lfg): Remove once WebViewFrameWidget is deleted.
   void scheduleAnimationForWidget();
   bool getCompositionCharacterBounds(WebVector<WebRect>&) override;
   void applyReplacementRange(const WebRange&) override;
@@ skipping 198 matching lines @@
   Persistent<ResizeViewportAnchor> m_resizeViewportAnchor;
 };
 
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 }  // namespace blink
 
 #endif