mojo-js: Use correct style for constants

Use CONSTANT_CASE for generated constants. Changes all instances that
used the incorrect case.

Bug: 1009251
Change-Id: I79b856996f543650b4cd20e329978936a12adeae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1842976
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704073}
diff --git a/resources/chromium/generic_sensor_mocks.js b/resources/chromium/generic_sensor_mocks.js
index a7272a6..eb28c48 100644
--- a/resources/chromium/generic_sensor_mocks.js
+++ b/resources/chromium/generic_sensor_mocks.js
@@ -124,7 +124,7 @@
   class MockSensorProvider {
     constructor() {
       this.readingSizeInBytes_ =
-          device.mojom.SensorInitParams.kReadBufferSizeForTests;
+          device.mojom.SensorInitParams.READ_BUFFER_SIZE_FOR_TESTS;
       this.sharedBufferSizeInBytes_ = this.readingSizeInBytes_ *
               (device.mojom.SensorType.MAX_VALUE + 1);
       const rv = Mojo.createSharedBuffer(this.sharedBufferSizeInBytes_);