Adding an It2Me host binary which is uiaccess enabled.

remoting/host/BUILD.gn

Index: remoting/host/BUILD.gn
diff --git a/remoting/host/BUILD.gn b/remoting/host/BUILD.gn
index cbe014ed2f3de0b7d4971460c872c81376bbeb11..934571db896679ab15e228b9e8eca821eb2f63e1 100644
--- a/remoting/host/BUILD.gn
+++ b/remoting/host/BUILD.gn
@@ -31,8 +31,11 @@ if (is_win) {
 # Reference this manifest to indicate that a process is per-monitor DPI aware.
 dpi_aware_manifest = "//remoting/host/win/dpi_aware.manifest"
 
-# Depending on this target gives a default executable manifest with the addition
-# of the DPI aware tag.
+# Reference this manifest to give the binary the uiAccess privilege.
+enable_uiaccess_manifest = "//remoting/host/win/enable_uiaccess.manifest"
+
+# Depending on this target gives the executable a default manifest with the
+# addition of the DPI aware tag.
 windows_manifest("dpi_aware_exe_manifest") {
   sources = [
     as_invoker_manifest,
@@ -43,8 +46,9 @@ windows_manifest("dpi_aware_exe_manifest") {
   type = "exe"
 }
 
-# Depending on this target gives a default executable manifest with the addition
-# of the DPI aware tag and a requestedExecutionLevel of requireAdministrator.
+# Depending on this target gives the executable a default manifest with the
+# addition of the DPI aware tag and requestedExecutionLevel of
+# requireAdministrator.
 windows_manifest("dpi_aware_elevated_exe_manifest") {
   sources = [
     common_controls_manifest,
@@ -55,6 +59,18 @@ windows_manifest("dpi_aware_elevated_exe_manifest") {
   type = "exe"
 }
 
+# Depending on this target gives the executable a default manifest with the
+# addition of the DPI aware tag and enables uiAccess.
+windows_manifest("dpi_aware_uiaccess_exe_manifest") {
+  sources = [
+    common_controls_manifest,
+    default_compatibility_manifest,
+    dpi_aware_manifest,
+    enable_uiaccess_manifest,
+  ]
+  type = "exe"
+}
+
 # GYP version: remoting/remoting_host:remoting_host_credits
 action("credits") {
   # We put this in $root_build_dir/gen/remoting instead of
@@ -1559,6 +1575,7 @@ if (enable_me2me_host) {
         ":remoting_native_messaging_manifests",
         ":remoting_start_host",
         "it2me:remote_assistance_host",
+        "it2me:remote_assistance_host_uiaccess",
         "//third_party/icu:icudata",
       ]
 
@@ -1586,6 +1603,7 @@ if (enable_me2me_host) {
       # addressed.
       inputs = [
         "$root_out_dir/remote_assistance_host.exe",
+        "$root_out_dir/remote_assistance_host_uiaccess.exe",
         "$root_out_dir/remote_security_key.exe",
         "$root_out_dir/remoting_core.dll",
         "$root_out_dir/remoting_desktop.exe",
@@ -1605,6 +1623,7 @@ if (enable_me2me_host) {
       # _generated_files, otherwise the Windows MSI will not be built correctly.
       _generated_dst_files = [
         "files/remote_assistance_host.exe",
+        "files/remote_assistance_host_uiaccess.exe",
         "files/remote_security_key.exe",
         "files/remoting_core.dll",
         "files/remoting_desktop.exe",