Makes the current page dim out when transitioning to instant preview.

chrome/browser/ui/views/frame/browser_view.cc

 // Copyright (c) 2010 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/views/frame/browser_view.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 1344 matching lines @@
   ui_controls::SendKeyPress(GetNativeHandle(), app::VKEY_V,
                             false, false, false, true);
 }
 #endif
 
 void BrowserView::ToggleTabStripMode() {
   InitTabStrip(browser_->tabstrip_model());
   frame_->TabStripDisplayModeChanged();
 }
 
+void BrowserView::PrepareForInstant() {
+  contents_->FadeActiveContents();
+}
+
 void BrowserView::ShowInstant(TabContents* preview_contents) {
   if (!preview_container_)
     preview_container_ = new TabContentsContainer();
   contents_->SetPreview(preview_container_, preview_contents);
   preview_container_->ChangeTabContents(preview_contents);
+
+#if defined(OS_WIN)
+  // Removing the fade is instant (on windows). We need to force the preview to
+  // draw, otherwise the current page flickers before the new page appears.
+  RedrawWindow(preview_contents->view()->GetContentNativeView(), NULL, NULL,
+               RDW_INVALIDATE | RDW_UPDATENOW | RDW_NOCHILDREN);
+#endif
+
+  contents_->RemoveFade();
 }
 
 void BrowserView::HideInstant() {
   if (!preview_container_)
     return;
 
   // The contents must be changed before SetPreview is invoked.
   preview_container_->ChangeTabContents(NULL);
   contents_->SetPreview(NULL, NULL);
   delete preview_container_;
   preview_container_ = NULL;
+  contents_->RemoveFade();
 }
 
 gfx::Rect BrowserView::GetInstantBounds() {
   return contents_->GetPreviewBounds();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // BrowserView, BrowserWindowTesting implementation:
 
 BookmarkBarView* BrowserView::GetBookmarkBarView() const {
@@ skipping 1072 matching lines @@
       SetAccessibleName(l10n_util::GetString(IDS_PRODUCT_NAME));
 
   return view;
 }
 #endif
 
 // static
 FindBar* BrowserWindow::CreateFindBar(Browser* browser) {
   return browser::CreateFindBar(static_cast<BrowserView*>(browser->window()));
 }