Implement PrintBrowser functionality.

chrome/browser/ui/webui/print_preview/print_preview_ui.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 "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
 
 #include <map>
 #include <vector>
 
+#include "base/command_line.h"
 #include "base/feature_list.h"
 #include "base/id_map.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/printing/background_printing_manager.h"
 #include "chrome/browser/printing/print_preview_data_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/metrics_handler.h"
 #include "chrome/browser/ui/webui/print_preview/print_preview_handler.h"
 #include "chrome/browser/ui/webui/theme_source.h"
 #include "chrome/common/chrome_features.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/browser_resources.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/printing/common/print_messages.h"
 #include "components/strings/grit/components_strings.h"
 #include "content/public/browser/url_data_source.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "extensions/common/constants.h"
@@ skipping 369 matching lines @@
   source->AddBoolean("scalingEnabled", scaling_enabled);
 
 #if defined(OS_CHROMEOS)
   bool cups_and_md_settings_enabled =
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           ::switches::kEnableNativeCups);
   source->AddBoolean("showLocalManageButton", cups_and_md_settings_enabled);
 #else
   source->AddBoolean("showLocalManageButton", true);
 #endif
+
+// printBrowserEnabled is used to determine whether or not to show the navbar
+#if BUILDFLAG(ENABLE_PRINT_BROWSER)
+  bool print_browser_enabled =
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
+          ::switches::kEnablePrintBrowser);
+  source->AddBoolean("printBrowserEnabled", print_browser_enabled);
+#else
+  source->AddBoolean("printBrowserEnabled", false);
+#endif
   return source;
 }
 
 PrintPreviewUI::TestingDelegate* g_testing_delegate = NULL;
 
 }  // namespace
 
 PrintPreviewUI::PrintPreviewUI(content::WebUI* web_ui)
     : ConstrainedWebDialogUI(web_ui),
       initial_preview_start_time_(base::TimeTicks::Now()),
@@ skipping 256 matching lines @@
 }
 
 void PrintPreviewUI::SetSelectedFileForTesting(const base::FilePath& path) {
   handler_->FileSelected(path, 0, NULL);
 }
 
 void PrintPreviewUI::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   handler_->SetPdfSavedClosureForTesting(closure);
 }