[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 05c7c446b6f7d8a58ec576cd661ee3a616593ddb..72bc13f1ccce03b46228501c6f5fe72694e55c82 100644
--- a/third_party/WebKit/Source/modules/sensor/SensorProxy.h
+++ b/third_party/WebKit/Source/modules/sensor/SensorProxy.h
@@ -6,12 +6,15 @@
 #define SensorProxy_h
 
 #include "core/dom/ExceptionCode.h"
+#include "core/dom/ExecutionContext.h"
 #include "device/generic_sensor/public/cpp/sensor_reading.h"
 #include "device/generic_sensor/public/interfaces/sensor.mojom-blink.h"
 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom-blink.h"
 #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"
 
 namespace blink {
 
@@ -36,6 +39,8 @@ class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
     virtual void onSensorError(ExceptionCode,
                                const String& sanitizedMessage,
                                const String& unsanitizedMessage) {}
+    // Permission for sensor has changed.
+    virtual void onSensorPermissionChanged() {}
   };
 
   ~SensorProxy();
@@ -70,16 +75,31 @@ class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
   // Updates internal reading from shared buffer.
   void updateInternalReading();
 
+  mojom::blink::PermissionService* getPermissionService(ExecutionContext*);
+  void resetPermissionService();
+  void permissionServiceConnectionError();
+  void onPermissionUpdate(mojom::blink::PermissionStatus);
+  void getNextPermissionChange(ExecutionContext*,
+                               mojom::blink::PermissionStatus);
+  void requestPermission(ExecutionContext*, mojom::blink::PermissionStatus);
+  mojom::blink::PermissionStatus getPermissionStatus() const {
+    return m_sensorPermission;
+  };
+
   DECLARE_VIRTUAL_TRACE();
 
  private:
   friend class SensorProviderProxy;
-  SensorProxy(device::mojom::blink::SensorType, SensorProviderProxy*);
+  SensorProxy(device::mojom::blink::SensorType,
+              ExecutionContext*,
+              SensorProviderProxy*);
 
   // device::mojom::blink::SensorClient overrides.
   void RaiseError() override;
   void SensorReadingChanged() override;
 
+  void SensorPermissionChanged();
+
   // Generic handler for a fatal error.
   void handleSensorError(ExceptionCode = UnknownError,
                          const String& sanitizedMessage = String(),
@@ -111,6 +131,10 @@ class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
       sizeof(ReadingBuffer) ==
           device::mojom::blink::SensorInitParams::kReadBufferSizeForTests,
       "Check reading buffer size for tests");
+
+  mojom::blink::PermissionStatus m_sensorPermission;
+  mojom::blink::PermissionServicePtr m_permissionService;
+  Member<ExecutionContext> m_executionContext;
 };
 
 }  // namespace blink