[sensors][permission] Add new permission types in permission module.

third_party/WebKit/Source/modules/permissions/Permissions.cpp

Index: third_party/WebKit/Source/modules/permissions/Permissions.cpp
diff --git a/third_party/WebKit/Source/modules/permissions/Permissions.cpp b/third_party/WebKit/Source/modules/permissions/Permissions.cpp
index f9a49940254a69240cbb17a52e311b23c9a8f6cb..f02914b204cd5294284a8bfec5c47942b830591c 100644
--- a/third_party/WebKit/Source/modules/permissions/Permissions.cpp
+++ b/third_party/WebKit/Source/modules/permissions/Permissions.cpp
@@ -20,6 +20,7 @@
 #include "modules/permissions/PermissionDescriptor.h"
 #include "modules/permissions/PermissionStatus.h"
 #include "modules/permissions/PermissionUtils.h"
+#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/UserGestureIndicator.h"
 #include "platform/wtf/Functional.h"
 #include "platform/wtf/NotFound.h"
@@ -91,6 +92,23 @@ PermissionDescriptorPtr ParsePermission(ScriptState* script_state,
   }
   if (name == "background-sync")
     return CreatePermissionDescriptor(PermissionName::BACKGROUND_SYNC);
+  // TODO(riju): Remove runtime flag check when Generic Sensor feature is
+  // stable.
+  if (name == "ambient-light-sensor" || name == "accelerometer" ||
+      name == "gyroscope" || name == "magnetometer") {
+    if (!RuntimeEnabledFeatures::sensorEnabled()) {
+      exception_state.ThrowTypeError("GenericSensor flag is not enabled.");
+      return nullptr;
+    }
+    if (name == "ambient-light-sensor")
+      return CreatePermissionDescriptor(PermissionName::AMBIENT_LIGHT_SENSOR);
+    if (name == "accelerometer")
+      return CreatePermissionDescriptor(PermissionName::ACCELEROMETER);
+    if (name == "gyroscope")
+      return CreatePermissionDescriptor(PermissionName::GYROSCOPE);
+    if (name == "magnetometer")
+      return CreatePermissionDescriptor(PermissionName::MAGNETOMETER);
+  }
 
   return nullptr;
 }