[Sensors] Reland: Align sensor reading updates and 'onchange' notification with rAF.

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"
@@ skipping 38 matching lines @@
 
 SensorProviderProxy::~SensorProviderProxy() {}
 
 DEFINE_TRACE(SensorProviderProxy) {
   visitor->trace(m_sensorProxies);
   Supplement<LocalFrame>::trace(visitor);
 }
 
 SensorProxy* SensorProviderProxy::createSensorProxy(
     device::mojom::blink::SensorType type,
-    Page* page,
+    Document* document,
     std::unique_ptr<SensorReadingFactory> readingFactory) {
   DCHECK(!getSensorProxy(type));
 
   SensorProxy* sensor =
-      new SensorProxy(type, this, page, std::move(readingFactory));
+      new SensorProxy(type, this, document, std::move(readingFactory));
   m_sensorProxies.add(sensor);
 
   return sensor;
 }
 
 SensorProxy* SensorProviderProxy::getSensorProxy(
     device::mojom::blink::SensorType type) {
   for (SensorProxy* sensor : m_sensorProxies) {
     // 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_sensorProvider.reset();
   for (SensorProxy* sensor : m_sensorProxies)
     sensor->handleSensorError();
 }
 
 }  // namespace blink