https://codereview.chromium.org/2634773002

Let's use https://codereview.chromium.org/2637343002

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a2fe05521add5347b1024ca582045447cc469325

commit a2fe05521add5347b1024ca582045447cc469325
Author: dougt <dougt@chromium.org>
Date: Fri Jan 27 05:35:30 2017

Implement WebBluetooth descriptor.readValue()

A GATT Descriptor provides further information about a characteristic's
value. For each characteristic there may be many descriptors as defined by
https://webbluetoothcg.github.io/web-bluetooth/#bluetoothremotegattdescriptor.

In  Bug 660699 , we added support for accessing descriptors from characteristics.
In this CL, we add support for reading the value of the descriptor.

BUG= 668837 
R=scheib

Review-Url: https://codereview.chromium.org/2637343002
Cr-Commit-Position: refs/heads/master@{#446603}

[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/content/browser/bad_message.h
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/content/browser/bluetooth/bluetooth_metrics.cc
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/content/browser/bluetooth/bluetooth_metrics.h
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/content/browser/bluetooth/web_bluetooth_service_impl.cc
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/content/browser/bluetooth/web_bluetooth_service_impl.h
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.cc
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-descriptor-is-blocklisted.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-descriptor-is-removed.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-device-goes-out-of-range.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-device-disconnects-before.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-device-disconnects-during-error.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-device-disconnects-during-success.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-device-reconnects-during-error.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-device-reconnects-during-success.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-disconnect-called-before.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-disconnect-called-during-error.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-disconnect-called-during-success.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-fails.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-garbage-collection-ran-during-error.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-garbage-collection-ran-during-success.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-reconnect-during-error.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-io-op-reconnect-during-success.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/gen-service-is-removed.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/read-succeeds.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/descriptor/readValue/read-updates-value.html
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/descriptor-is-blocklisted.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/descriptor-is-removed.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/device-goes-out-of-range.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-device-disconnects-before.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-device-disconnects-during-error.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-device-disconnects-during-success.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-device-reconnects-during-error.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-device-reconnects-during-success.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-disconnect-called-before.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-disconnect-called-during-error.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-disconnect-called-during-success.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-fails.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-garbage-collection-ran-during-error.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-garbage-collection-ran-during-success.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-reconnect-during-error.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/io-op-reconnect-during-success.js
[add] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/LayoutTests/bluetooth/script-tests/descriptor/service-is-removed.js
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.h
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothError.cpp
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTCharacteristic.cpp
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTDescriptor.cpp
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTDescriptor.h
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTServer.cpp
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTUtils.cpp
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTUtils.h
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom
[modify] https://crrev.com/a2fe05521add5347b1024ca582045447cc469325/tools/metrics/histograms/histograms.xml