Add flag to enable Material Design for the PDF Viewer.

chrome/browser/about_flags.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/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1699 matching lines @@
   },
   {
     "enable-out-of-process-pdf",
     IDS_FLAGS_OUT_OF_PROCESS_PDF_NAME,
     IDS_FLAGS_OUT_OF_PROCESS_PDF_DESCRIPTION,
     kOsDesktop,
     ENABLE_DISABLE_VALUE_TYPE(switches::kEnableOutOfProcessPdf,
                               switches::kDisableOutOfProcessPdf)
   },
   {
+    "enable-pdf-material-ui",
+    IDS_FLAGS_PDF_MATERIAL_UI_NAME,
+    IDS_FLAGS_PDF_MATERIAL_UI_DESCRIPTION,
+    kOsDesktop,
+    ENABLE_DISABLE_VALUE_TYPE(switches::kEnablePdfMaterialUI,
+                              switches::kDisablePdfMaterialUI)
+  },
+  {
     "disable-cast-streaming-hw-encoding",
     IDS_FLAGS_DISABLE_CAST_STREAMING_HW_ENCODING_NAME,
     IDS_FLAGS_DISABLE_CAST_STREAMING_HW_ENCODING_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kDisableCastStreamingHWEncoding)
   },
 #if defined(OS_ANDROID)
   {
     "disable-cast",
     IDS_FLAGS_DISABLE_CAST_NAME,
@@ skipping 994 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags