Remove unused libudev on Linux.

webrtc/media/devices/v4llookup.cc

Index: webrtc/media/devices/v4llookup.cc
diff --git a/webrtc/media/devices/v4llookup.cc b/webrtc/media/devices/v4llookup.cc
deleted file mode 100644
index 7c3dc706fe2cfc4252a49d5393ff1a54f5063e51..0000000000000000000000000000000000000000
--- a/webrtc/media/devices/v4llookup.cc
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- *  Copyright (c) 2009 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-/*
- * Author: lexnikitin@google.com (Alexey Nikitin)
- *
- * V4LLookup provides basic functionality to work with V2L2 devices in Linux
- * The functionality is implemented as a class with virtual methods for
- * the purpose of unit testing.
- */
-#include "webrtc/media/devices/v4llookup.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <linux/types.h>
-#include <linux/videodev2.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "webrtc/base/logging.h"
-
-namespace cricket {
-
-V4LLookup *V4LLookup::v4l_lookup_ = NULL;
-
-bool V4LLookup::CheckIsV4L2Device(const std::string& device_path) {
-  // check device major/minor numbers are in the range for video devices.
-  struct stat s;
-
-  if (lstat(device_path.c_str(), &s) != 0 || !S_ISCHR(s.st_mode)) return false;
-
-  int video_fd = -1;
-  bool is_v4l2 = false;
-
-  // check major/minur device numbers are in range for video device
-  if (major(s.st_rdev) == 81) {
-    dev_t num = minor(s.st_rdev);
-    if (num <= 63) {
-      video_fd = ::open(device_path.c_str(), O_RDONLY | O_NONBLOCK);
-      if ((video_fd >= 0) || (errno == EBUSY)) {
-        ::v4l2_capability video_caps;
-        memset(&video_caps, 0, sizeof(video_caps));
-
-        if ((errno == EBUSY) ||
-            (::ioctl(video_fd, VIDIOC_QUERYCAP, &video_caps) >= 0 &&
-            (video_caps.capabilities & V4L2_CAP_VIDEO_CAPTURE))) {
-          LOG(LS_INFO) << "Found V4L2 capture device " << device_path;
-
-          is_v4l2 = true;
-        } else {
-          LOG_ERRNO(LS_ERROR) << "VIDIOC_QUERYCAP failed for " << device_path;
-        }
-      } else {
-        LOG_ERRNO(LS_ERROR) << "Failed to open " << device_path;
-      }
-    }
-  }
-
-  if (video_fd >= 0)
-    ::close(video_fd);
-
-  return is_v4l2;
-}
-
-};  // namespace cricket