Correct overlapping layout ranges.

src/layout.cc

Index: src/layout.cc
===================================================================
--- src/layout.cc	(revision 92)
+++ src/layout.cc	(working copy)
@@ -394,7 +394,12 @@
         !subtable.ReadU16(&start_coverage_index)) {
       return OTS_FAILURE();
     }
-    if (start > end || (last_end && start <= last_end)) {
+
+    // Some of the Adobe Pro fonts have ranges that overlap by one element: the
+    // start of one range is equal to the end of the previous range. Therefore
+    // the < in the following condition should be <= were it not for this.
+    // See crbug.com/134135.
+    if (start > end || (last_end && start < last_end)) {
       OTS_WARNING("glyph range is overlapping.");
       return OTS_FAILURE();
     }