Added platform restrictions to bluetooth API documentation

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 10e0f4b8906f05081e47d042ecd19ac0c0adc17d..3c61019f732a29b0e5615693a7a8f75826a55230 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -829,11 +829,13 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_EXPERIMENTAL_WEB_PLATFORM_FEATURES_DESCRIPTION,
      kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableExperimentalWebPlatformFeatures)},
+#if defined(OS_CHROMEOS) || defined(OS_MACOSX) || defined(OS_ANDROID)
     {"enable-web-bluetooth",
      IDS_FLAGS_WEB_BLUETOOTH_NAME,
      IDS_FLAGS_WEB_BLUETOOTH_DESCRIPTION,
-     kOsAll,
+     kOsCrOS | kOsMac | kOsAndroid,
      SINGLE_VALUE_TYPE(switches::kEnableWebBluetooth)},
+#endif
 #if defined(ENABLE_EXTENSIONS)
     {"enable-ble-advertising-in-apps",
      IDS_FLAGS_BLE_ADVERTISING_IN_EXTENSIONS_NAME,