Remove kEnablePrintPreview now that the pdf plugin is part of Chromium.

chrome/browser/printing/print_preview_dialog_controller_browsertest.cc

Index: chrome/browser/printing/print_preview_dialog_controller_browsertest.cc
===================================================================
--- chrome/browser/printing/print_preview_dialog_controller_browsertest.cc	(revision 272869)
+++ chrome/browser/printing/print_preview_dialog_controller_browsertest.cc	(working copy)
@@ -2,14 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "chrome/browser/printing/print_preview_dialog_controller.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/common/chrome_switches.h"
 #include "chrome/common/print_messages.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/in_process_browser_test.h"
@@ -123,12 +121,6 @@
   }
 
  private:
-  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
-#if !defined(GOOGLE_CHROME_BUILD)
-    command_line->AppendSwitch(switches::kEnablePrintPreview);
-#endif
-  }
-
   virtual void SetUpOnMainThread() OVERRIDE {
     WebContents* first_tab =
         browser()->tab_strip_model()->GetActiveWebContents();