message: Make WireTests not rely on SamplerBuilder
  The sampler builder will be removed as the first builder being converted
  to a descriptor. Use CommandBufferBuilder instead as it is not expected
  to change soon.
diff: @@ -184,14 +184,14 @@ TEST_F(WireTests, ReleaseCalledOnRefCount0) {
  // Test that the wire is able to send numerical values
  TEST_F(WireTests, ValueArgument) {
  - nxtSamplerBuilder builder = nxtDeviceCreateSamplerBuilder(device);
  - nxtSamplerBuilderSetFilterMode(builder, NXT_FILTER_MODE_LINEAR, NXT_FILTER_MODE_LINEAR, NXT_FILTER_MODE_NEAREST);
  + nxtCommandBufferBuilder builder = nxtDeviceCreateCommandBufferBuilder(device);
  + nxtCommandBufferBuilderDispatch(builder, 1, 2, 3);
  - nxtSamplerBuilder apiBuilder = api.GetNewSamplerBuilder();
  - EXPECT_CALL(api, DeviceCreateSamplerBuilder(apiDevice))
  + nxtCommandBufferBuilder apiBuilder = api.GetNewCommandBufferBuilder();
  + EXPECT_CALL(api, DeviceCreateCommandBufferBuilder(apiDevice))
  .WillOnce(Return(apiBuilder));
  - EXPECT_CALL(api, SamplerBuilderSetFilterMode(apiBuilder, NXT_FILTER_MODE_LINEAR, NXT_FILTER_MODE_LINEAR, NXT_FILTER_MODE_NEAREST))
  + EXPECT_CALL(api, CommandBufferBuilderDispatch(apiBuilder, 1, 2, 3))
  .Times(1);
  FlushClient();
  