Hook up SetInstantPreviewHeight for ChromeOS.

chrome/browser/ui/views/frame/contents_container.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_
 
+#include "chrome/common/instant_types.h"
 #include "ui/views/view.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace views {
 class WebView;
 }
 
@@ skipping 20 matching lines @@
 
   // Makes the preview view the active view and nulls out the old active view.
   // It's assumed the caller will delete or remove the old active view
   // separately.
   void MakePreviewContentsActiveContents();
 
   // Sets the preview view. This does not delete the old.
   void SetPreview(views::WebView* preview,
                   content::WebContents* preview_web_contents);
   views::WebView* preview() { return preview_; }
+
+  // Sets the height of the preview. The default height is 100%, and each time
+  // the preview is cleared, the default is restored.
+  void SetPreviewHeight(int height, InstantSizeUnits units);
+
   content::WebContents* preview_web_contents() const {
     return preview_web_contents_;
   }
 
   // Sets the active top margin.
   void SetActiveTopMargin(int margin);
 
   // Returns the bounds of the preview. If the preview isn't active this
   // retuns the bounds the preview would be shown at.
   gfx::Rect GetPreviewBounds();
 
   // View overrides:
   virtual void Layout() OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
 
  private:
   views::WebView* active_;
   views::View* overlay_;
   views::WebView* preview_;
   content::WebContents* preview_web_contents_;
 
+  // Returns the current preview height, in pixels.
+  int PreviewHeightInPixels() const;
+
   // The margin between the top and the active view. This is used to make the
   // preview overlap the bookmark bar on the new tab page.
   int active_top_margin_;
 
+  // The desired height of the preview and units.
+  int preview_height_;
+  InstantSizeUnits preview_height_units_;
+
   DISALLOW_COPY_AND_ASSIGN(ContentsContainer);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_CONTAINER_H_