Ozone Linux: Fix build errors with chromeos==0 ozone_platform_drm=true

ui/ozone/platform/drm/gpu/drm_device.cc

Index: ui/ozone/platform/drm/gpu/drm_device.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_device.cc b/ui/ozone/platform/drm/gpu/drm_device.cc
index 462ec641a43a63eb596a8a0c1d0689b216eec02c..03ac08417b654c485fa12c3dcd8168074ce09862 100644
--- a/ui/ozone/platform/drm/gpu/drm_device.cc
+++ b/ui/ozone/platform/drm/gpu/drm_device.cc
@@ -670,7 +670,21 @@ bool DrmDevice::CommitProperties(drmModeAtomicReq* properties,
 
 bool DrmDevice::SetCapability(uint64_t capability, uint64_t value) {
   DCHECK(file_.IsValid());
-  return !drmSetClientCap(file_.GetPlatformFile(), capability, value);
+
+#ifndef DRM_IOCTL_SET_CLIENT_CAP
+// drmSetClientCap was introduced in a later version of libdrm than the wheezy
+// sysroot supplies.
+// TODO(thomasanderson): Remove this when support for the wheezy sysroot is
+// dropped in favor of jessie.
+#define DRM_IOCTL_SET_CLIENT_CAP DRM_IOW(0x0d, struct drm_set_client_cap)
+  struct drm_set_client_cap {
+    __u64 capability;
+    __u64 value;
+  };
+#endif
+
+  struct drm_set_client_cap cap = {capability, value};
+  return !drmIoctl(file_.GetPlatformFile(), DRM_IOCTL_SET_CLIENT_CAP, &cap);
 }
 
 bool DrmDevice::SetMaster() {