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

third_party/WebKit/Source/modules/sensor/SensorProxy.h

Index: third_party/WebKit/Source/modules/sensor/SensorProxy.h
diff --git a/third_party/WebKit/Source/modules/sensor/SensorProxy.h b/third_party/WebKit/Source/modules/sensor/SensorProxy.h
index 84bc7a4e4315591fb5aeb9bb2de3e237d0e671ac..585184fedb87fd974e83df4133da294ad09bcd7a 100644
--- a/third_party/WebKit/Source/modules/sensor/SensorProxy.h
+++ b/third_party/WebKit/Source/modules/sensor/SensorProxy.h
@@ -13,6 +13,8 @@
 #include "mojo/public/cpp/bindings/binding.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/modules/permissions/permission.mojom-blink.h"
+#include "public/platform/modules/permissions/permission_status.mojom-blink.h"
 #include "wtf/Vector.h"
 
 namespace blink {
@@ -20,11 +22,13 @@ namespace blink {
 class SensorProviderProxy;
 class SensorReading;
 class SensorReadingUpdater;
+class SecurityOrigin;
 
 // This class wraps 'Sensor' mojo interface and used by multiple
 // JS sensor instances of the same type (within a single frame).
 class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
                           public device::mojom::blink::SensorClient,
+                          public mojom::blink::PermissionObserver,
                           public PageVisibilityObserver {
   USING_GARBAGE_COLLECTED_MIXIN(SensorProxy);
   USING_PRE_FINALIZER(SensorProxy, Dispose);
@@ -103,7 +107,10 @@ class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
   friend class SensorProviderProxy;
   friend class SensorReadingUpdaterContinuous;
   friend class SensorReadingUpdaterOnChange;
-  SensorProxy(device::mojom::blink::SensorType, SensorProviderProxy*, Page*);
+  SensorProxy(device::mojom::blink::SensorType,
+              RefPtr<SecurityOrigin>,
+              SensorProviderProxy*,
+              Page*);
 
   // Updates sensor reading from shared buffer.
   void UpdateSensorReading();
@@ -131,9 +138,13 @@ class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
   bool TryReadFromBuffer(device::SensorReading& result);
   void OnAnimationFrame(double timestamp);
 
+  // PermissionObserver override.
+  void OnPermissionStatusChange(mojom::blink::PermissionStatus);
+
   device::mojom::blink::SensorType type_;
   device::mojom::blink::ReportingMode mode_;
   Member<SensorProviderProxy> provider_;
+
   using ObserversSet = HeapHashSet<WeakMember<Observer>>;
   ObserversSet observers_;
 
@@ -158,6 +169,10 @@ class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
       sizeof(ReadingBuffer) ==
           device::mojom::blink::SensorInitParams::kReadBufferSizeForTests,
       "Check reading buffer size for tests");
+
+  RefPtr<SecurityOrigin> security_origin_;
+  mojo::Binding<mojom::blink::PermissionObserver> binding_;
+  bool permission_subscribed_;
 };
 
 }  // namespace blink