Use stub GL draw/clear calls for browser tests that do not need pixels.

chrome/browser/ui/webui/net_internals/net_internals_ui_browsertest.cc

Index: chrome/browser/ui/webui/net_internals/net_internals_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/net_internals/net_internals_ui_browsertest.cc b/chrome/browser/ui/webui/net_internals/net_internals_ui_browsertest.cc
index 677aadd676e836c4e3672b6ca069568582b0ecda..fd4dca041e44be92a79966a5f9727561bb731310 100644
--- a/chrome/browser/ui/webui/net_internals/net_internals_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/net_internals/net_internals_ui_browsertest.cc
@@ -380,16 +380,6 @@ NetInternalsTest::NetInternalsTest()
 NetInternalsTest::~NetInternalsTest() {
 }
 
-void NetInternalsTest::SetUp() {
-#if defined(OS_WIN) && defined(USE_AURA)
-  // The NetInternalsTest.netInternalsTimelineViewScrollbar test requires real
-  // GL bindings to pass on Win7 Aura.
-  UseRealGLBindings();
-#endif
-
-  WebUIBrowserTest::SetUp();
-}
-
 void NetInternalsTest::SetUpCommandLine(CommandLine* command_line) {
   WebUIBrowserTest::SetUpCommandLine(command_line);
   // Needed to test the prerender view.