Fix for 21639 progress meter draws three times for each update, r=pinkerton, a=chofmann

layout/xul/base/src/nsProgressMeterFrame.cpp

@@ -328,7 +328,7 @@ nsProgressMeterFrame::setSize(nsAutoString sizeString, int& size, PRBool& isPerc
 			v = 100;
 	}
 
-	printf("size=%d\n", v);
+	// printf("size=%d\n", v);
 
   size = v;
 }
@@ -377,6 +377,8 @@ nsProgressMeterFrame :: Paint ( nsIPresContext* aPresContext,
   nsLeafFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
                        aWhichLayer);
   
+  if (aWhichLayer == NS_FRAME_PAINT_LAYER_FOREGROUND)
+  {
     // get our border
     const nsStyleSpacing* spacing =
       (const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
@@ -409,7 +411,7 @@ nsProgressMeterFrame :: Paint ( nsIPresContext* aPresContext,
 
     // paint the current progress in blue
     PaintBar(aPresContext, aRenderingContext, rect, mProgress, color);
-	
+	}
  
   return NS_OK;  
 } // Paint
@@ -429,7 +431,7 @@ nsProgressMeterFrame :: PaintBar ( nsIPresContext* aPresContext,
 
   if (!mUndetermined) 
 	{
-	  int p = (int)(bar.width*progress);
+	  nscoord p = (nscoord)(bar.width*progress);
 	  bar.width = p;
 	}
 
@@ -449,7 +451,6 @@ nsProgressMeterFrame :: PaintBar ( nsIPresContext* aPresContext,
   else 
 	  PaintBarSolid(aPresContext,aRenderingContext,bar, color, 0);	
 
-
 }
 
 nsRect 
@@ -479,7 +480,6 @@ nsProgressMeterFrame::GetBrightness(nscolor c)
 {
      
 	// get the biggest rgb component;
-
   PRUint8 r = NS_GET_R(c);
   PRUint8 g = NS_GET_G(c);
   PRUint8 b = NS_GET_B(c);