Have compositor_model_bench target near its source files.

gpu/BUILD.gn

Index: gpu/BUILD.gn
diff --git a/gpu/BUILD.gn b/gpu/BUILD.gn
index c7f70eb7e5adc30e11db0457ee988a2e5ff0dd1d..c27cb8f7b642400dbec63e1acb6dc69cc91f6a85 100644
--- a/gpu/BUILD.gn
+++ b/gpu/BUILD.gn
@@ -291,25 +291,3 @@ test("angle_unittests") {
     "//third_party/angle:translator_static",
   ]
 }
-
-if (is_linux && !is_chromeos && target_cpu != "arm" && use_x11) {
-  executable("compositor_model_bench") {
-    sources = [
-      "tools/compositor_model_bench/compositor_model_bench.cc",
-      "tools/compositor_model_bench/forward_render_model.cc",
-      "tools/compositor_model_bench/render_model_utils.cc",
-      "tools/compositor_model_bench/render_models.cc",
-      "tools/compositor_model_bench/render_tree.cc",
-      "tools/compositor_model_bench/shaders.cc",
-    ]
-
-    libs = [ "GL" ]
-
-    configs += [ "//build/config/linux:x11" ]
-
-    deps = [
-      "//base",
-      "//ui/gl",
-    ]
-  }
-}