Revert of [headless] Fix screenshots with gpu enabled.

headless/test/headless_browser_test.h

Index: headless/test/headless_browser_test.h
diff --git a/headless/test/headless_browser_test.h b/headless/test/headless_browser_test.h
index 1a258ceccb33d93bad481fa22f0b9451e8aa4fe9..3db973b02e5490ca3c4a7107a56b9a2a168ee461 100644
--- a/headless/test/headless_browser_test.h
+++ b/headless/test/headless_browser_test.h
@@ -94,10 +94,6 @@
   IN_PROC_BROWSER_TEST_F(TEST_FIXTURE_NAME, RunAsyncTest) { RunTest(); } \
   class AsyncHeadlessBrowserTestNeedsSemicolon##TEST_FIXTURE_NAME {}
 
-#define HEADLESS_ASYNC_DEVTOOLED_TEST_P(TEST_FIXTURE_NAME)               \
-  IN_PROC_BROWSER_TEST_P(TEST_FIXTURE_NAME, RunAsyncTest) { RunTest(); } \
-  class AsyncHeadlessBrowserTestNeedsSemicolon##TEST_FIXTURE_NAME {}
-
 // Base class for tests that require access to a DevToolsClient. Subclasses
 // should override the RunDevTooledTest() method, which is called asynchronously
 // when the DevToolsClient is ready.