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

include/gpu/GrUserConfig.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrUserConfig_DEFINED
 #define GrUserConfig_DEFINED
 
 #if defined(GR_USER_CONFIG_FILE)
     #error "default user config pulled in but GR_USER_CONFIG_FILE is defined."
 #endif
 
 /**
- * This gives a threshold in bytes of when to lock a GrGeometryBuffer vs using
+ * This gives a threshold in bytes of when to map a GrGeometryBuffer vs using
  * updateData. (Note the depending on the underlying 3D API the update functions
- * may always be implemented using a lock)
+ * may always be implemented using a map)
  */
-//#define GR_GEOM_BUFFER_LOCK_THRESHOLD (1<<15)
+//#define GR_GEOM_BUFFER_MAP_THRESHOLD (1<<15)
 
 /**
  * This gives a threshold in megabytes for the maximum size of the texture cache
  * in vram. The value is only a default and can be overridden at runtime.
  */
 //#define GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT 96
 
 /**
  * This specifies the maximum number of textures the texture cache can hold
  * in vram. The value is only a default and can be overridden at runtime.
  */
 //#define GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT 2048
 
 #endif