Enable mmap and identity-based validation caching on pnacl-{llc,ld}.nexe

components/nacl/browser/nacl_browser.h

Index: components/nacl/browser/nacl_browser.h
diff --git a/components/nacl/browser/nacl_browser.h b/components/nacl/browser/nacl_browser.h
index 4216733aa46e650b888d92bdb18de5c347790845..e2cb10b78e796b63990d51f4898f3a9422b755a8 100644
--- a/components/nacl/browser/nacl_browser.h
+++ b/components/nacl/browser/nacl_browser.h
@@ -23,9 +23,10 @@ class GURL;
 
 namespace nacl {
 
-// Open an immutable executable file that can be mmapped.
+// Open an immutable executable file that can be mmapped (or a read-only file).
 // This function should only be called on a thread that can perform file IO.
-base::File OpenNaClExecutableImpl(const base::FilePath& file_path);
+base::File OpenNaClReadExecImpl(const base::FilePath& file_path,
+                                bool is_executable);
 
 // Represents shared state for all NaClProcessHost objects in the browser.
 class NaClBrowser {