sensors: Add content_shell code path for new sensor manipulation comm…

…ands.

content_shell does not use ChromeDriver, so we need a separate
implementation for the testdriver.js commands we are adding.

This implementation is anchored on Blink's Internals system, which then
uses Mojo to call the virtual sensor-related Mojo commands in the
SensorProvider interface. Once the calls reach content/browser, the code
path is identical to what happens via ChromeDriver and CDP.

Bug: 1278377
Change-Id: I13f49d529b36916d1f98b4792839e818fd7e8bdb

resources/testdriver.js

@@ -801,6 +801,22 @@
          */
         reset_fedcm_cooldown: function(context=null) {
           return window.test_driver_internal.reset_fedcm_cooldown(context);
+        },
+
+        create_virtual_sensor: function(sensor_type, sensor_params={}, context=null) {
+          return window.test_driver_internal.create_virtual_sensor(sensor_type, sensor_params, context);
+        },
+
+        update_virtual_sensor: function(sensor_type, reading, context=null) {
+          return window.test_driver_internal.update_virtual_sensor(sensor_type, reading, context);
+        },
+
+        remove_virtual_sensor: function(sensor_type, context=null) {
+          return window.test_driver_internal.remove_virtual_sensor(sensor_type, context);
+        },
+
+        get_virtual_sensor_information: function(sensor_type, context=null) {
+          return window.test_driver_internal.get_virtual_sensor_information(sensor_type, context);
         }
     };
 
@@ -953,6 +969,22 @@
 
         async reset_fedcm_cooldown(context=null) {
             throw new Error("reset_fedcm_cooldown() is not implemented by testdriver-vendor.js");
+        },
+
+        async create_virtual_sensor(sensor_type, sensor_params={}, context=null) {
+            throw new Error("create_virtual_sensor() is not implemented by testdriver-vendor.js");
+        },
+
+        async update_virtual_sensor(sensor_type, reading, context=null) {
+            throw new Error("update_virtual_sensor() is not implemented by testdriver-vendor.js");
+        },
+
+        async remove_virtual_sensor(sensor_type, context=null) {
+            throw new Error("remove_virtual_sensor() is not implemented by testdriver-vendor.js");
+        },
+
+        async get_virtual_sensor_information(sensor_type, context=null) {
+            throw new Error("get_virtual_sensor_information() is not implemented by testdriver-vendor.js");
         }
     };
 })();