[Chromoting] Unit Tests for GlRenderer

remoting/client/BUILD.gn

Index: remoting/client/BUILD.gn
diff --git a/remoting/client/BUILD.gn b/remoting/client/BUILD.gn
index 5bae90e951bae4e779bf662cbb15aef082c67234..834eedf0d2783345efe8256ce4c885e55d1a1efc 100644
--- a/remoting/client/BUILD.gn
+++ b/remoting/client/BUILD.gn
@@ -41,7 +41,7 @@ static_library("client") {
   }
 }
 
-if (is_android || is_ios) {
+if (is_android || is_ios || is_linux) {
   source_set("opengl_renderer") {
     sources =
         rebase_path(remoting_srcs_gypi_values.remoting_opengl_renderer_sources,
@@ -110,4 +110,10 @@ source_set("unit_tests") {
     "//testing/gtest",
     "//third_party/webrtc",
   ]
+
+  if (is_linux) {
+    sources += [ "gl_renderer_unittest.cc" ]
+    deps += [ ":opengl_renderer" ]
+    libs = [ "GL" ]
+  }
 }