Remove --disable-fullscreen-within-tab command-line flag.

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

 // Copyright 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/views/frame/browser_view.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 1895 matching lines @@
     InitHangMonitor();
   }
 
   LoadAccelerators();
 
   infobar_container_ = new InfoBarContainerView(this);
   AddChildView(infobar_container_);
 
   contents_web_view_ = new ContentsWebView(browser_->profile());
   contents_web_view_->set_id(VIEW_ID_TAB_CONTAINER);
-  contents_web_view_->SetEmbedFullscreenWidgetMode(
-      implicit_cast<content::WebContentsDelegate*>(browser_.get())->
-          EmbedsFullscreenWidget());
+  contents_web_view_->SetEmbedFullscreenWidgetMode(true);
 
   web_contents_close_handler_.reset(
       new WebContentsCloseHandler(contents_web_view_));
 
   devtools_web_view_ = new views::WebView(browser_->profile());
   devtools_web_view_->set_id(VIEW_ID_DEV_TOOLS_DOCKED);
   devtools_web_view_->SetVisible(false);
 
   contents_container_ = new views::View();
   contents_container_->set_background(views::Background::CreateSolidBackground(
@@ skipping 606 matching lines @@
       !GetLocationBar()->GetOmniboxView()->model()->popup_model()->IsOpen()) {
     gfx::Point icon_bottom(
         toolbar_->location_bar()->GetLocationBarAnchorPoint());
     ConvertPointToTarget(toolbar_->location_bar(), this, &icon_bottom);
     gfx::Point infobar_top(0, infobar_container_->GetVerticalOverlap(NULL));
     ConvertPointToTarget(infobar_container_, this, &infobar_top);
     top_arrow_height = infobar_top.y() - icon_bottom.y();
   }
   return top_arrow_height;
 }