events: Use case sensitive matches for evdev device name

Input device node names always start with exactly "event".

Bug: none
Test: compile

Change-Id: I7e332f16901fa979eff7b1553ae6439a0806b9fd

Reviewed-on: https://chromium-review.googlesource.com/c/1287103
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600968}

ui/events/devices/device_util_linux.cc

@@ -22,8 +22,7 @@ InputDeviceType GetInputDeviceTypeFromPath(const base::FilePath& path) {
   base::AssertBlockingAllowedDeprecated();
   std::string event_node = path.BaseName().value();
   if (event_node.empty() ||
-      !base::StartsWith(event_node, "event",
-                        base::CompareCase::INSENSITIVE_ASCII))
+      !base::StartsWith(event_node, "event", base::CompareCase::SENSITIVE))
     return InputDeviceType::INPUT_DEVICE_UNKNOWN;
 
   base::FilePath sysfs_path = GetInputPathInSys(path);