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

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

 // Copyright 2014 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/permissions/Permissions.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/Nullable.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
@@ skipping 69 matching lines @@
     return createPermissionDescriptor(PermissionName::PUSH_NOTIFICATIONS);
   }
   if (name == "midi") {
     MidiPermissionDescriptor midiPermission =
         NativeValueTraits<MidiPermissionDescriptor>::nativeValue(
             scriptState->isolate(), rawPermission.v8Value(), exceptionState);
     return createMidiPermissionDescriptor(midiPermission.sysex());
   }
   if (name == "background-sync")
     return createPermissionDescriptor(PermissionName::BACKGROUND_SYNC);
+  if (name == "sensors")
+    return createPermissionDescriptor(PermissionName::SENSORS);
 
   return nullptr;
 }
 
 }  // anonymous namespace
 
 ScriptPromise Permissions::query(ScriptState* scriptState,
                                  const Dictionary& rawPermission) {
   ExceptionState exceptionState(ExceptionState::GetterContext, "query",
                                 "Permissions", scriptState->context()->Global(),
@@ skipping 200 matching lines @@
   result.reserveInitialCapacity(callerIndexToInternalIndex.size());
   for (int internalIndex : callerIndexToInternalIndex) {
     result.append(PermissionStatus::createAndListen(
         resolver->getExecutionContext(), results[internalIndex],
         descriptors[internalIndex]->Clone()));
   }
   resolver->resolve(result);
 }
 
 }  // namespace blink