Rename from "(un)lock" to "(un)map" for geometry buffers.

include/gpu/GrConfig.h

Index: include/gpu/GrConfig.h
diff --git a/include/gpu/GrConfig.h b/include/gpu/GrConfig.h
index cbdb3503c27f1858ecfc1225587dd5b3a131df5f..c0d90a368040ddae5da739698fd12efe482157d0 100644
--- a/include/gpu/GrConfig.h
+++ b/include/gpu/GrConfig.h
@@ -197,13 +197,13 @@ typedef unsigned __int64 uint64_t;
 #endif
 
 /**
- * GR_GEOM_BUFFER_LOCK_THRESHOLD gives a threshold (in bytes) for when Gr should
- * lock a GrGeometryBuffer to update its contents. It will use lock() if the
+ * GR_GEOM_BUFFER_MAP_THRESHOLD gives a threshold (in bytes) for when Gr should
+ * map a GrGeometryBuffer to update its contents. It will use map() if the
  * size of the updated region is greater than the threshold. Otherwise it will
  * use updateData().
  */
-#if !defined(GR_GEOM_BUFFER_LOCK_THRESHOLD)
-    #define GR_GEOM_BUFFER_LOCK_THRESHOLD (1 << 15)
+#if !defined(GR_GEOM_BUFFER_MAP_THRESHOLD)
+    #define GR_GEOM_BUFFER_MAP_THRESHOLD (1 << 15)
 #endif
 
 /**