Only record one in n line endings to save space.

src/macros.py

Index: src/macros.py
diff --git a/src/macros.py b/src/macros.py
index 94f94c39e18c91321ca086bd1b7da8c32c87da34..9e07d421afb1b179073eba426f55f47bb719d110 100644
--- a/src/macros.py
+++ b/src/macros.py
@@ -305,6 +305,13 @@ macro ORDERED_HASH_MAP_CHAIN_AT(table, entry, numBuckets) = (FIXED_ARRAY_GET(tab
 # Must match OrderedHashTable::kNotFound.
 define NOT_FOUND = -1;
 
+# Line ends array constants - see v8::internal::Script
+define REDUCTION_INDEX = 0;
+define NUMBER_OF_LINES_INDEX = 1;
+define FIRST_LINE_END_INDEX = 2;
+define ASCII_NL = 10;
+define ASCII_CR = 13;
+
 # Check whether debug is active.
 define DEBUG_IS_ACTIVE = (%_DebugIsActive() != 0);
 macro DEBUG_IS_STEPPING(function) = (%_DebugIsActive() != 0 && %DebugCallbackSupportsStepping(function));