gpu: Perf test to check costs of texture upload at different stages.

gpu/BUILD.gn

Index: gpu/BUILD.gn
diff --git a/gpu/BUILD.gn b/gpu/BUILD.gn
index fa9261f40acdc1a2fc2bea8b59f536ad4e2e472c..b0a5d5bfda97c986a4b12c20af563534f0348a91 100644
--- a/gpu/BUILD.gn
+++ b/gpu/BUILD.gn
@@ -244,6 +244,21 @@ test("gpu_unittests") {
   ]
 }
 
+test("gpu_perftests") {
+  sources = [
+    "perftests/run_all_tests.cc",
+    "perftests/texture_upload_perftest.cc",
+  ]
+
+  deps = [
+    "//base",
+    "//base/test:test_support",
+    "//testing/gtest",
+    "//testing/perf",
+    "//ui/gl",
+  ]
+}
+
 test("angle_unittests") {
   sources = [
     "angle_unittest_main.cc",