[sensors] Add Permission guard to the generic sensor apis.

third_party/WebKit/Source/modules/sensor/SensorProviderProxy.cpp

 // 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 "modules/sensor/SensorProviderProxy.h"
 
 #include "modules/sensor/SensorProxy.h"
 #include "modules/sensor/SensorReading.h"
 #include "platform/mojo/MojoHelper.h"
 #include "public/platform/InterfaceProvider.h"
 #include "public/platform/Platform.h"
 
 namespace blink {
 
 // SensorProviderProxy
 SensorProviderProxy::SensorProviderProxy(LocalFrame* frame) {
   frame->interfaceProvider()->getInterface(mojo::GetProxy(&m_sensorProvider));
   m_sensorProvider.set_connection_error_handler(convertToBaseCallback(
       WTF::bind(&SensorProviderProxy::onSensorProviderConnectionError,
                 wrapWeakPersistent(this))));
+
+  // Get permission service.
+  frame->interfaceProvider()->getInterface(
+      mojo::GetProxy(&m_permissionService));
+  m_permissionService.set_connection_error_handler(convertToBaseCallback(
+      WTF::bind(&SensorProviderProxy::onSensorProviderConnectionError,
+                wrapWeakPersistent(this))));
 }
 
 const char* SensorProviderProxy::supplementName() {
   return "SensorProvider";
 }
 
 SensorProviderProxy* SensorProviderProxy::from(LocalFrame* frame) {
   DCHECK(frame);
   SensorProviderProxy* result = static_cast<SensorProviderProxy*>(
       Supplement<LocalFrame>::from(*frame, supplementName()));
   if (!result) {
     result = new SensorProviderProxy(frame);
     Supplement<LocalFrame>::provideTo(*frame, supplementName(), result);
   }
   return result;
 }
 
 SensorProviderProxy::~SensorProviderProxy() {}
 
+void SensorProviderProxy::resetPermissionService() {
+  m_permissionService.reset();
+}
+
 DEFINE_TRACE(SensorProviderProxy) {
   visitor->trace(m_sensors);
   Supplement<LocalFrame>::trace(visitor);
 }
 
 SensorProxy* SensorProviderProxy::createSensor(
     device::mojom::blink::SensorType type,
+    RefPtr<SecurityOrigin> origin,
     std::unique_ptr<SensorReadingFactory> readingFactory) {
   DCHECK(!getSensor(type));
 
-  SensorProxy* sensor = new SensorProxy(type, this, std::move(readingFactory));
+  SensorProxy* sensor =
+      new SensorProxy(type, m_permissionService.get(), std::move(origin), this,
+                      std::move(readingFactory));
   m_sensors.add(sensor);
-
   return sensor;
 }
 
 SensorProxy* SensorProviderProxy::getSensor(
     device::mojom::blink::SensorType type) {
   for (SensorProxy* sensor : m_sensors) {
     // TODO(Mikhail) : Hash sensors by type for efficiency.
     if (sensor->type() == type)
       return sensor;
   }
 
   return nullptr;
 }
 
 void SensorProviderProxy::onSensorProviderConnectionError() {
   if (!Platform::current()) {
     // TODO(rockot): Clean this up once renderer shutdown sequence is fixed.
     return;
   }
 
+  m_permissionService.reset();
   m_sensorProvider.reset();
   for (SensorProxy* sensor : m_sensors)
     sensor->handleSensorError();
 }
 
 }  // namespace blink