Update from https://crrev.com/303153

gpu/command_buffer/common/command_buffer.h

Index: gpu/command_buffer/common/command_buffer.h
diff --git a/gpu/command_buffer/common/command_buffer.h b/gpu/command_buffer/common/command_buffer.h
index 61b91428f6848b7f013195584d4fe1dd41462ee4..d846ec11a634c1f7bade9440d0a830c1327ce21f 100644
--- a/gpu/command_buffer/common/command_buffer.h
+++ b/gpu/command_buffer/common/command_buffer.h
@@ -20,24 +20,16 @@ class GPU_EXPORT CommandBuffer {
  public:
   struct State {
     State()
-        : num_entries(0),
-          get_offset(0),
-          put_offset(0),
+        : get_offset(0),
           token(-1),
           error(error::kNoError),
           context_lost_reason(error::kUnknown),
           generation(0) {
     }
 
-    // Size of the command buffer in command buffer entries.
-    int32 num_entries;
-
     // The offset (in entries) from which the reader is reading.
     int32 get_offset;
 
-    // The offset (in entries) at which the writer is writing.
-    int32 put_offset;
-
     // The current token value. This is used by the writer to defer
     // changes to shared memory objects until the reader has reached a certain
     // point in the command buffer. The reader is responsible for updating the