Improve permission denied message to mention upgrading from L-preview.

third_party/android_crazy_linker/src/src/crazy_linker_elf_loader.cpp

Index: third_party/android_crazy_linker/src/src/crazy_linker_elf_loader.cpp
diff --git a/third_party/android_crazy_linker/src/src/crazy_linker_elf_loader.cpp b/third_party/android_crazy_linker/src/src/crazy_linker_elf_loader.cpp
index 08cfc6b602f5560bcfc10d764f7fa26e6c633afc..13221817c946c383a81e414ac03814bc93471a57 100644
--- a/third_party/android_crazy_linker/src/src/crazy_linker_elf_loader.cpp
+++ b/third_party/android_crazy_linker/src/src/crazy_linker_elf_loader.cpp
@@ -306,7 +306,13 @@ bool ElfLoader::LoadSegments(Error* error) {
                                MAP_FIXED | MAP_PRIVATE,
                                file_page_start + file_offset_);
       if (seg_addr == MAP_FAILED) {
-        error->Format("Could not map segment %d: %s", i, strerror(errno));
+        if (errno == EACCES) {
+          error->Format("Could not map segment %d: %s. "
+                        "If you are running L-preview, please upgrade to L.",
+                        i, strerror(errno));
+        } else {
+          error->Format("Could not map segment %d: %s", i, strerror(errno));
+        }
         return false;
       }
     }