Pepper: Clean up VarArrayBuffer documentation.
BUG=124858
Review URL: https://chromiumcodereview.appspot.com/12335066
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@184508 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ppapi/api/ppb_var_array_buffer.idl b/ppapi/api/ppb_var_array_buffer.idl
index b2b5b48..56f97010 100644
--- a/ppapi/api/ppb_var_array_buffer.idl
+++ b/ppapi/api/ppb_var_array_buffer.idl
@@ -57,10 +57,13 @@
/**
* Map() maps the <code>ArrayBuffer</code> in to the module's address space
* and returns a pointer to the beginning of the buffer for the given
- * <code>ArrayBuffer PP_Var</code>. Note that calling Map() can be a
- * relatively expensive operation. Use care when calling it in
- * performance-critical code. For example, you should call it only once when
- * looping over an <code>ArrayBuffer</code>.
+ * <code>ArrayBuffer PP_Var</code>. ArrayBuffers are copied when transmitted,
+ * so changes to the underlying memory are not automatically available to
+ * other processes.
+ *
+ * Note that calling Map() can be a relatively expensive operation. Use care
+ * when calling it in performance-critical code. For example, you should call
+ * it only once when looping over an <code>ArrayBuffer</code>.
*
* <strong>Example:</strong>
*
