Add --headless flag to Windows

headless/lib/headless_browser_browsertest.cc

Index: headless/lib/headless_browser_browsertest.cc
diff --git a/headless/lib/headless_browser_browsertest.cc b/headless/lib/headless_browser_browsertest.cc
index 6b0b3b846f720e909b18a64d995745c9a471fc16..f2e845651b7ad9ea51055cf394180f3d3630335b 100644
--- a/headless/lib/headless_browser_browsertest.cc
+++ b/headless/lib/headless_browser_browsertest.cc
@@ -626,11 +626,7 @@ IN_PROC_BROWSER_TEST_F(HeadlessBrowserTest, SetCookiesWithDevTools) {
 // TODO(skyostil): This test currently relies on being able to run a shell
 // script.
 #if defined(OS_POSIX)
-#define MAYBE_RendererCommandPrefixTest RendererCommandPrefixTest
-#else
-#define MAYBE_RendererCommandPrefixTest DISABLED_RendererCommandPrefixTest
-#endif  // defined(OS_POSIX)
-IN_PROC_BROWSER_TEST_F(HeadlessBrowserTest, MAYBE_RendererCommandPrefixTest) {
+IN_PROC_BROWSER_TEST_F(HeadlessBrowserTest, RendererCommandPrefixTest) {
   base::ThreadRestrictions::SetIOAllowed(true);
   base::FilePath launcher_stamp;
   base::CreateTemporaryFile(&launcher_stamp);
@@ -668,6 +664,7 @@ IN_PROC_BROWSER_TEST_F(HeadlessBrowserTest, MAYBE_RendererCommandPrefixTest) {
   base::DeleteFile(launcher_script, false);
   base::DeleteFile(launcher_stamp, false);
 }
+#endif  // defined(OS_POSIX)
 
 class CrashReporterTest : public HeadlessBrowserTest,
                           public HeadlessWebContents::Observer,
@@ -678,7 +675,8 @@ class CrashReporterTest : public HeadlessBrowserTest,
 
   void SetUp() override {
     base::ThreadRestrictions::SetIOAllowed(true);
-    base::CreateNewTempDirectory("CrashReporterTest", &crash_dumps_dir_);
+    base::CreateNewTempDirectory(FILE_PATH_LITERAL("CrashReporterTest"),
+                                 &crash_dumps_dir_);
     EXPECT_FALSE(options()->enable_crash_reporter);
     options()->enable_crash_reporter = true;
     options()->crash_dumps_dir = crash_dumps_dir_;
@@ -741,7 +739,7 @@ IN_PROC_BROWSER_TEST_F(CrashReporterTest, MAYBE_GenerateMinidump) {
                             base::FileEnumerator::FILES);
     base::FilePath minidump = it.Next();
     EXPECT_FALSE(minidump.empty());
-    EXPECT_EQ(".dmp", minidump.Extension());
+    EXPECT_EQ(FILE_PATH_LITERAL(".dmp"), minidump.Extension());
     EXPECT_TRUE(it.Next().empty());
   }