Not sure what you mean by "pressure", so my apologies if I misunderstood...but China and India paying for oil with gold is actually bullish for gold.  

Even the article concludes: "The vast sums involved in these transactions are expected, furthermore, to boost the price of gold and depress the value of the dollar on world markets".  

There are so many reasons this is positive for gold its hard to know where to begin.  At minimum, if China and India use their gold reserves for any extended period of time, they'll want to replace those reserves.  To do so these countries are likely to sell the dollars they're currently stuck with and buy gold to replace the quantities they've "spent".  And just imagine if they take kindly to the idea of using gold as money...and start demanding payment from others in this way for things they export.  The dollar would be finished at that point if this idea spreads!!