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

chrome/browser/printing/print_preview_dialog_controller_browsertest.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 "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"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/test/browser_test_utils.h"
 #include "url/gurl.h"
 #include "ipc/ipc_message_macros.h"
 
 using content::WebContents;
@@ skipping 93 matching lines @@
     run_loop.Run();
   }
 
   WebContents* GetPrintPreviewDialog() {
     printing::PrintPreviewDialogController* dialog_controller =
         printing::PrintPreviewDialogController::GetInstance();
     return dialog_controller->GetPrintPreviewForContents(initiator_);
   }
 
  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();
     ASSERT_TRUE(first_tab);
 
     // Open a new tab so |cloned_tab_observer_| can see it first and attach a
     // RequestPrintPreviewObserver to it before the real
     // PrintPreviewMessageHandler gets created. Thus enabling
     // RequestPrintPreviewObserver to get messages first for the purposes of
     // this test.
@@ skipping 83 matching lines @@
       browser()->tab_strip_model()->GetActiveWebContents());
   ASSERT_TRUE(dialog_destroyed_observer.dialog_destroyed());
 
   // Try printing again.
   PrintPreview();
 
   // Create a preview dialog for the initiator tab.
   WebContents* new_preview_dialog = GetPrintPreviewDialog();
   EXPECT_TRUE(new_preview_dialog);
 }