Use a mocked compositor for unit tests

chrome/test/gpu/webgl_conformance_tests.cc

Index: chrome/test/gpu/webgl_conformance_tests.cc
diff --git a/chrome/test/gpu/webgl_conformance_tests.cc b/chrome/test/gpu/webgl_conformance_tests.cc
index 2f4091c9b533afacf7e56108435c1aba589950f6..74ef240a67f46739105973f0dd30838a22ba4637 100644
--- a/chrome/test/gpu/webgl_conformance_tests.cc
+++ b/chrome/test/gpu/webgl_conformance_tests.cc
@@ -8,21 +8,13 @@
 #include "base/utf_string_conversions.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/automation/tab_proxy.h"
-#include "chrome/test/base/test_launcher_utils.h"
 #include "chrome/test/ui/javascript_test_util.h"
 #include "chrome/test/ui/ui_test.h"
 #include "content/common/content_switches.h"
 #include "net/base/net_util.h"
-#include "ui/gfx/gl/gl_implementation.h"
 
 namespace {
 
-#if defined(OS_WIN)
-const std::string& kGLImplementationName = gfx::kGLImplementationEGLName;
-#else
-const std::string& kGLImplementationName = gfx::kGLImplementationDesktopName;
-#endif
-
 class WebGLConformanceTests : public UITest {
  public:
   WebGLConformanceTests() {