add range check to service-side MapBufferRange

gpu/command_buffer/service/buffer_manager.h

Index: gpu/command_buffer/service/buffer_manager.h
diff --git a/gpu/command_buffer/service/buffer_manager.h b/gpu/command_buffer/service/buffer_manager.h
index 16c43cff95fae49d89128258a2f2069f822ebf30..f2456a4166ac76dee192a45a10078994205c8a0c 100644
--- a/gpu/command_buffer/service/buffer_manager.h
+++ b/gpu/command_buffer/service/buffer_manager.h
@@ -70,6 +70,9 @@ class GPU_EXPORT Buffer : public base::RefCounted<Buffer> {
   // Returns a pointer to shadowed data.
   const void* GetRange(GLintptr offset, GLsizeiptr size) const;
 
+  // Check if an offset, size range is valid for the current buffer.
+  bool CheckRange(GLintptr offset, GLsizeiptr size) const;
+
   bool IsDeleted() const {
     return deleted_;
   }
@@ -174,9 +177,6 @@ class GPU_EXPORT Buffer : public base::RefCounted<Buffer> {
   // Clears any cache of index ranges.
   void ClearCache();
 
-  // Check if an offset, size range is valid for the current buffer.
-  bool CheckRange(GLintptr offset, GLsizeiptr size) const;
-
   // The manager that owns this Buffer.
   BufferManager* manager_;