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

src/gpu/gl/GrGLBufferImpl.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLBufferImpl_DEFINED
 #define GrGLBufferImpl_DEFINED
 
@@ skipping 22 matching lines @@
     }
 
     void abandon();
     void release(GrGpuGL* gpu);
 
     GrGLuint bufferID() const { return fDesc.fID; }
     size_t baseOffset() const { return reinterpret_cast<size_t>(fCPUData); }
 
     void bind(GrGpuGL* gpu) const;
 
-    void* lock(GrGpuGL* gpu);
-    void* lockPtr() const { return fLockPtr; }
-    void unlock(GrGpuGL* gpu);
-    bool isLocked() const;
+    void* map(GrGpuGL* gpu);
+    void* mapPtr() const { return fMapPtr; }
+    void unmap(GrGpuGL* gpu);
+    bool isMapped() const;
     bool updateData(GrGpuGL* gpu, const void* src, size_t srcSizeInBytes);
 
 private:
     void validate() const;
 
     Desc         fDesc;
     GrGLenum     fBufferType; // GL_ARRAY_BUFFER or GL_ELEMENT_ARRAY_BUFFER
     void*        fCPUData;
-    void*        fLockPtr;
+    void*        fMapPtr;
     size_t       fGLSizeInBytes;     // In certain cases we make the size of the GL buffer object
                                      // smaller or larger than the size in fDesc.
 
     typedef SkNoncopyable INHERITED;
 };
 
 #endif