Move more web widgets painting from webkit to chrome.

gfx/color_utils.cc

Index: gfx/color_utils.cc
diff --git a/gfx/color_utils.cc b/gfx/color_utils.cc
index 73c585baf3be58a83d578283f172bd94a7a5a941..ccddfa866e2baff7788518f3e3ba61b960d1d0f9 100644
--- a/gfx/color_utils.cc
+++ b/gfx/color_utils.cc
@@ -145,6 +145,17 @@ SkColor HSLToSkColor(const HSL& hsl, SkAlpha alpha) {
       static_cast<int>(calcHue(temp1, temp2, hue - 1.0 / 3.0) * 255));
 }
 
+SkColor BrightenColor(const HSL& hsl, SkAlpha alpha, double lightness_amount) {

[tony, 2011/01/14 22:06:04]

Can we just use HSLShift for this?  It's a little different, so maybe it'll
force us to rebaseline a lot of tests.  If that's a lot of tests, I would just
move this method into native_theme_linux.*.  This method doesn't seem like it'll
be used outside that file.

[xiyuan, 2011/01/18 21:30:49]

Done. Moved it into native_theme_linux.

+  HSL adjusted = hsl;
+  adjusted.l += lightness_amount;
+  if (adjusted.l > 1.0)
+    adjusted.l = 1.0;
+  if (adjusted.l < 0.0)
+    adjusted.l = 0.0;
+
+  return HSLToSkColor(adjusted, alpha);
+}
+
 SkColor HSLShift(SkColor color, const HSL& shift) {
   HSL hsl;
   int alpha = SkColorGetA(color);