Enable WebUSB on Android.

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 1965 matching lines @@
                                switches::kDisableMergeKeyCharEvents)},
 #endif  // defined(OS_WIN)
 #if defined(ENABLE_BACKGROUND)
     {"enable-push-api-background-mode",
      IDS_FLAGS_PUSH_API_BACKGROUND_MODE_NAME,
      IDS_FLAGS_PUSH_API_BACKGROUND_MODE_DESCRIPTION,
      kOsMac | kOsWin | kOsLinux,
      ENABLE_DISABLE_VALUE_TYPE(switches::kEnablePushApiBackgroundMode,
                                switches::kDisablePushApiBackgroundMode)},
 #endif  // defined(ENABLE_BACKGROUND)
-#if !defined(OS_ANDROID) && !defined(OS_IOS)
-     // TODO(reillyg): Remove this flag when the permission granting UI is
-     // available. crbug.com/529950
-     {"enable-webusb-on-any-origin",
-      IDS_FLAGS_ENABLE_WEBUSB_ON_ANY_ORIGIN_NAME,
-      IDS_FLAGS_ENABLE_WEBUSB_ON_ANY_ORIGIN_DESCRIPTION,
-      kOsDesktop,
-      SINGLE_VALUE_TYPE(switches::kEnableWebUsbOnAnyOrigin)},
-#endif
+    // TODO(reillyg): Remove this flag when the permission granting UI is
+    // available. crbug.com/529950
+    {"enable-webusb-on-any-origin",
+     IDS_FLAGS_ENABLE_WEBUSB_ON_ANY_ORIGIN_NAME,
+     IDS_FLAGS_ENABLE_WEBUSB_ON_ANY_ORIGIN_DESCRIPTION,
+     kOsAll,
+     SINGLE_VALUE_TYPE(switches::kEnableWebUsbOnAnyOrigin)},
 #if defined(OS_CHROMEOS)
     {"cros-regions-mode",
      IDS_FLAGS_CROS_REGIONS_MODE_NAME,
      IDS_FLAGS_CROS_REGIONS_MODE_DESCRIPTION,
      kOsCrOS,
      MULTI_VALUE_TYPE(kCrosRegionsModeChoices)},
 #endif  // OS_CHROMEOS
 #if defined(OS_WIN)
     {"enable-ppapi-win32k-lockdown",
      IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_NAME,
@@ skipping 260 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags