Link startup_helper_win statically into executables

content/app/startup_helper_win.h

Index: content/app/startup_helper_win.h
diff --git a/content/app/startup_helper_win.h b/content/app/startup_helper_win.h
index b870798b99203a1dd9359c0c60ccb48b158a5a1a..e20b638fb6c9f145f948753c7bd75eefadab6fc8 100644
--- a/content/app/startup_helper_win.h
+++ b/content/app/startup_helper_win.h
@@ -6,8 +6,6 @@
 #define CONTENT_APP_STARTUP_HELPER_WIN_H_
 #pragma once
 
-#include "content/common/content_export.h"
-
 class CommandLine;
 
 namespace sandbox {
@@ -18,9 +16,11 @@ struct SandboxInterfaceInfo;
 // will want to call at startup.
 namespace content {
 
-// Initializes the sandbox code and turns on DEP.
-CONTENT_EXPORT void InitializeSandboxInfo(
-    sandbox::SandboxInterfaceInfo* sandbox_info);
+// Initializes the sandbox code and turns on DEP. Note: This function
+// must be *statically* linked into the executable (along with the static
+// sandbox library); it will not work correctly if it is exported from a
+// DLL and linked in.
+void InitializeSandboxInfo(sandbox::SandboxInterfaceInfo* sandbox_info);
 
 // Register the invalid param handler and pure call handler to be able to
 // notify breakpad when it happens.