Misc. cleanup, primarily removing unused locals.

ui/gfx/gdi_util.h

Index: ui/gfx/gdi_util.h
diff --git a/ui/gfx/gdi_util.h b/ui/gfx/gdi_util.h
index d8563b6996617f078b2c3371349dc298ccf99596..58c168b5b4ca4fab9776cc482394dcc8562fba7a 100644
--- a/ui/gfx/gdi_util.h
+++ b/ui/gfx/gdi_util.h
@@ -18,11 +18,6 @@ namespace gfx {
 GFX_EXPORT void CreateBitmapHeader(int width, int height,
                                    BITMAPINFOHEADER* hdr);
 
-// Creates a BITMAPINFOHEADER structure given the bitmap's size and
-// color depth in bits per pixel.
-void CreateBitmapHeaderWithColorDepth(int width, int height, int color_depth,
-                                      BITMAPINFOHEADER* hdr);
-
 // Creates a BITMAPV4HEADER structure given the bitmap's size.  You probably
 // only need to use BMP V4 if you need transparency (alpha channel). This
 // function sets the AlphaMask to 0xff000000.