[Sensors] Clamp given sampling frequency to the minimum supported one

device/generic_sensor/sensor_provider_impl.cc

 // Copyright 2016 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 "device/generic_sensor/sensor_provider_impl.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 82 matching lines @@
   init_params->buffer_offset = SensorReadingSharedBuffer::GetOffset(type);
   init_params->mode = sensor->GetReportingMode();
   init_params->default_configuration = sensor->GetDefaultConfiguration();
 
   double maximum_frequency = sensor->GetMaximumSupportedFrequency();
   DCHECK(maximum_frequency > 0);
   if (maximum_frequency > mojom::SensorConfiguration::kMaxAllowedFrequency)
     maximum_frequency = mojom::SensorConfiguration::kMaxAllowedFrequency;
 
   init_params->maximum_frequency = maximum_frequency;
+  init_params->minimum_frequency = sensor->GetMinimumSupportedFrequency();
+  DCHECK(init_params->minimum_frequency > 0);

[Reilly Grant (use Gerrit), 2017/02/22 18:40:15]

DCHECK_GT(init_params->minimum_frequency, 0);

(Also above for maximum_frequency, sorry I didn't catch that earlier.)

[Mikhail, 2017/02/23 12:42:34]

Done.

 
   NotifySensorCreated(std::move(init_params), sensor_impl->GetClient(),
                       callback);
 
   mojo::MakeStrongBinding(std::move(sensor_impl), std::move(sensor_request));
 }
 
 }  // namespace device