[bluetooth] enable writeValueWith[out]Response on supported platforms

This enables the new Web Bluetooth BluetoothRemoteGattCharacteristic
writeValueWithResponse() and writeValueWithoutResponse() APIs on Win10,
Mac, Android and ChromeOS.

This has LGTM3 from blink-dev.
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/1JE8tjylY3s

Bug: 672648
Change-Id: Iebcdb0c6c7daeb3aa230f0ec511a805655a0cdaa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2220694Reviewed-by: Mike West <mkwst@chromium.org>
Commit-Queue: David Lechner <david@pybricks.com>
Cr-Commit-Position: refs/heads/master@{#774613}

content/child/runtime_features.cc

@@ -59,8 +59,11 @@ void SetRuntimeFeatureDefaultsForPlatform(
   WebRuntimeFeatures::EnableCompositedSelectionUpdate(true);
 #endif
 #if defined(OS_WIN)
-  if (base::win::GetVersion() >= base::win::Version::WIN10)
+  if (base::win::GetVersion() >= base::win::Version::WIN10) {
     WebRuntimeFeatures::EnableWebBluetooth(true);
+    WebRuntimeFeatures::EnableWebBluetoothRemoteCharacteristicNewWriteValue(
+        true);
+  }
 #endif
 
 #if defined(SUPPORT_WEBGL2_COMPUTE_CONTEXT)

third_party/blink/public/platform/web_runtime_features.h

@@ -173,6 +173,8 @@ class WebRuntimeFeatures {
   BLINK_PLATFORM_EXPORT static void
   EnableWebAuthenticationGetAssertionFeaturePolicy(bool);
   BLINK_PLATFORM_EXPORT static void EnableWebBluetooth(bool);
+  BLINK_PLATFORM_EXPORT static void
+  EnableWebBluetoothRemoteCharacteristicNewWriteValue(bool);
   BLINK_PLATFORM_EXPORT static void EnableWebBluetoothScanning(bool);
   BLINK_PLATFORM_EXPORT static void EnableWebGL2ComputeContext(bool);
   BLINK_PLATFORM_EXPORT static void EnableWebGLDraftExtensions(bool);

third_party/blink/renderer/platform/exported/web_runtime_features.cc

@@ -58,6 +58,12 @@ void WebRuntimeFeatures::EnableWebBluetooth(bool enable) {
   RuntimeEnabledFeatures::SetWebBluetoothEnabled(enable);
 }
 
+void WebRuntimeFeatures::EnableWebBluetoothRemoteCharacteristicNewWriteValue(
+    bool enable) {
+  RuntimeEnabledFeatures::
+      SetWebBluetoothRemoteCharacteristicNewWriteValueEnabled(enable);
+}
+
 void WebRuntimeFeatures::EnableWebBluetoothScanning(bool enable) {
   RuntimeEnabledFeatures::SetWebBluetoothScanningEnabled(enable);
 }

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -1907,7 +1907,12 @@
     },
     {
       name: "WebBluetoothRemoteCharacteristicNewWriteValue",
-      status: "experimental",
+      status: {
+        "Android": "stable",
+        "ChromeOS": "stable",
+        "MacOSX": "stable",
+        "default": "experimental",
+      },
     },
     {
       name: "WebBluetoothScanning",

third_party/blink/web_tests/platform/mac/virtual/stable/webexposed/global-interface-listing-platform-specific-expected.txt

@@ -42,6 +42,8 @@ interface BluetoothRemoteGATTCharacteristic : EventTarget
     method startNotifications
     method stopNotifications
     method writeValue
+    method writeValueWithResponse
+    method writeValueWithoutResponse
     setter oncharacteristicvaluechanged
 interface BluetoothRemoteGATTDescriptor
     attribute @@toStringTag

third_party/blink/web_tests/platform/win/virtual/stable/webexposed/global-interface-listing-platform-specific-expected.txt

@@ -42,6 +42,8 @@ interface BluetoothRemoteGATTCharacteristic : EventTarget
     method startNotifications
     method stopNotifications
     method writeValue
+    method writeValueWithResponse
+    method writeValueWithoutResponse
     setter oncharacteristicvaluechanged
 interface BluetoothRemoteGATTDescriptor
     attribute @@toStringTag