share all the needed linux code with OpenBSD in chrome and content

chrome/browser/browser_about_handler.cc

Index: chrome/browser/browser_about_handler.cc
diff --git a/chrome/browser/browser_about_handler.cc b/chrome/browser/browser_about_handler.cc
index d9e192eff06654d7f548b34b4b9770bd62caed3d..8f88affc30e4bb7ca63eadcd3521a09eeda51bcd 100644
--- a/chrome/browser/browser_about_handler.cc
+++ b/chrome/browser/browser_about_handler.cc
@@ -79,7 +79,7 @@
 #include "chrome/browser/chromeos/version_loader.h"
 #include "chrome/browser/oom_priority_manager.h"
 #include "content/browser/zygote_host_linux.h"
-#elif defined(OS_LINUX)
+#elif defined(OS_LINUX) || defined(OS_OPENBSD)
 #include "content/browser/zygote_host_linux.h"
 #endif
 
@@ -152,7 +152,7 @@ const char* const kChromePaths[] = {
 #if defined(OS_WIN)
   chrome::kChromeUIConflictsHost,
 #endif
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   chrome::kChromeUILinuxProxyConfigHost,
   chrome::kChromeUISandboxHost,
 #endif
@@ -190,7 +190,7 @@ const char* const kAboutSourceNames[] = {
 #if defined(USE_TCMALLOC)
   chrome::kChromeUITCMallocHost,
 #endif
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   chrome::kChromeUILinuxProxyConfigHost,
   chrome::kChromeUISandboxHost,
 #endif
@@ -1066,7 +1066,7 @@ std::string AboutStats(const std::string& query) {
   return data;
 }
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
 std::string AboutLinuxProxyConfig() {
   std::string data;
   AppendHeader(&data, 0,
@@ -1451,7 +1451,7 @@ void AboutSource::StartDataRequest(const std::string& path,
     return;
   } else if (host == chrome::kChromeUIHistogramsHost) {
     response = AboutHistograms(path);
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   } else if (host == chrome::kChromeUILinuxProxyConfigHost) {
     response = AboutLinuxProxyConfig();
 #endif
@@ -1467,7 +1467,7 @@ void AboutSource::StartDataRequest(const std::string& path,
     response = ResourceBundle::GetSharedInstance().GetRawDataResource(
         IDR_OS_CREDITS_HTML).as_string();
 #endif
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   } else if (host == chrome::kChromeUISandboxHost) {
     response = AboutSandbox();
 #endif