Hook up SetInstantPreviewHeight for ChromeOS.

chrome/browser/ui/gtk/browser_window_gtk.cc

 // 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.
 
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 1116 matching lines @@
 void BrowserWindowGtk::Copy() {
   gtk_window_util::DoCopy(
       window_, chrome::GetActiveWebContents(browser_.get()));
 }
 
 void BrowserWindowGtk::Paste() {
   gtk_window_util::DoPaste(
       window_, chrome::GetActiveWebContents(browser_.get()));
 }
 
-void BrowserWindowGtk::ShowInstant(TabContents* preview) {
+void BrowserWindowGtk::ShowInstant(TabContents* preview,
+                                   int height,
+                                   InstantSizeUnits units) {
+  // TODO(jered): Support height < 100%.
+  DCHECK(height == 100 && units == INSTANT_SIZE_PERCENT);
   contents_container_->SetPreview(preview);
   MaybeShowBookmarkBar(false);
 }
 
 void BrowserWindowGtk::HideInstant() {
   contents_container_->PopPreview();
   MaybeShowBookmarkBar(false);
 }
 
 gfx::Rect BrowserWindowGtk::GetInstantBounds() {
@@ skipping 1285 matching lines @@
           wm_type == ui::WM_OPENBOX ||
           wm_type == ui::WM_XFWM4);
 }
 
 // static
 BrowserWindow* BrowserWindow::CreateBrowserWindow(Browser* browser) {
   BrowserWindowGtk* browser_window_gtk = new BrowserWindowGtk(browser);
   browser_window_gtk->Init();
   return browser_window_gtk;
 }