Cache IsNonBrowserProcess values, so we only take a loader-lock the first time.

chrome_elf/chrome_elf_util_unittest.cc

Index: chrome_elf/chrome_elf_util_unittest.cc
diff --git a/chrome_elf/chrome_elf_util_unittest.cc b/chrome_elf/chrome_elf_util_unittest.cc
index ad838018b43260c7d6609aa15ee9a8e121e19719..f3f2b9d0f769195a68442bd63d98682b1b0551ae 100644
--- a/chrome_elf/chrome_elf_util_unittest.cc
+++ b/chrome_elf/chrome_elf_util_unittest.cc
@@ -48,6 +48,12 @@ TEST(ChromeElfUtilTest, SystemInstallTest) {
   EXPECT_FALSE(IsSystemInstall(kChromeUserExePath));
 }
 
+TEST(ChromeElfUtilTest, BrowserProcessTest) {
+  EXPECT_TRUE(g_is_non_browser_process == ProcessType::UNINITIALIZED);
+  InitializeIsNonBrowserProcess();
+  EXPECT_FALSE(IsNonBrowserProcess());
+}
+
 // Parameterized test with paramters:
 // 1: product: "canary" or "google"
 // 2: install level: "user" or "system"