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..7e4cd0cd82198285ae522f2b437381113d8029b2 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 {

[grt (UTC plus 2), 2015/05/12 15:17:37]

nit: "enum class 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_process_type| which stores whether or not the current process
+// is the main browser process.
+void InitializeProcessType();
+
 // Returns true if invoked in a Chrome process other than the main browser
 // process. False otherwise.
 bool IsNonBrowserProcess();
 
+extern ProcessType g_process_type;

[grt (UTC plus 2), 2015/05/12 15:17:37]

does this need to be public? if so, it should have a doc comment.

+
 #endif  // CHROME_ELF_CHROME_ELF_UTIL_H_