Hook up SetInstantPreviewHeight for ChromeOS.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

 // 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/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 540 matching lines @@
 }
 
 void BrowserWindowCocoa::ExitPresentationMode() {
   [controller_ exitPresentationMode];
 }
 
 bool BrowserWindowCocoa::InPresentationMode() {
   return [controller_ inPresentationMode];
 }
 
-void BrowserWindowCocoa::ShowInstant(TabContents* preview) {
+void BrowserWindowCocoa::ShowInstant(TabContents* preview,
+                                     int height,
+                                     InstantSizeUnits units) {
+  // TODO(jered): Support height < 100%.
+  DCHECK(height == 100 && units == INSTANT_SIZE_PERCENT);
   [controller_ showInstant:preview->web_contents()];
 }
 
 void BrowserWindowCocoa::HideInstant() {
   [controller_ hideInstant];
 }
 
 gfx::Rect BrowserWindowCocoa::GetInstantBounds() {
   // Flip coordinates based on the primary screen.
   NSScreen* screen = [[NSScreen screens] objectAtIndex:0];
@@ skipping 69 matching lines @@
   AvatarMenuBubbleController* menu =
       [[AvatarMenuBubbleController alloc] initWithBrowser:browser_
                                                anchoredAt:point];
   [[menu bubble] setAlignment:info_bubble::kAlignEdgeToAnchorEdge];
   [menu showWindow:nil];
 }
 
 void BrowserWindowCocoa::ShowAvatarBubbleFromAvatarButton() {
   [[controller_ avatarButtonController] showAvatarBubble];
 }