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

chrome_elf/chrome_elf_util.h

Index: chrome_elf/chrome_elf_util.h
diff --git a/chrome_elf/chrome_elf_util.h b/chrome_elf/chrome_elf_util.h
index e87dc7fab7023a9580e874c771536628cb41186f..942ae17bc6b6e6637b6e6008c67534b793000310 100644
--- a/chrome_elf/chrome_elf_util.h
+++ b/chrome_elf/chrome_elf_util.h
@@ -7,6 +7,12 @@
 
 #include "base/strings/string16.h"
 
+enum ProcessType {
+  UNINITIALIZED,
+  NON_BROWSER_PROCESS,
+  BROWSER_PROCESS,
+};
+
 // Returns true if |exe_path| points to a Chrome installed in an SxS
 // installation.
 bool IsCanary(const wchar_t* exe_path);
@@ -24,8 +30,14 @@ bool AreUsageStatsEnabled(const wchar_t* exe_path);
 // if stats collecting is permitted by this policy and false if not.
 bool ReportingIsEnforcedByPolicy(bool* breakpad_enabled);
 
+// Initializes |g_is_non_browser_process| which stores whether or not the
+// current process is the main browser process.
+void InitializeIsNonBrowserProcess();
+
 // Returns true if invoked in a Chrome process other than the main browser
 // process. False otherwise.
 bool IsNonBrowserProcess();
 
+extern ProcessType g_is_non_browser_process;
+
 #endif  // CHROME_ELF_CHROME_ELF_UTIL_H_