ChromeOS status text halo polish.

- Fix the spikes on text of certain font by using round line join
  instead of default mitter join;
- Use the same 0.7 black as other icons instead of 1.0 black;

BUG=chromium-os:9787
TEST=Verify fix for chromium-os:9787

Review URL: http://codereview.chromium.org/5522007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@68255 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/status/status_area_button.cc

@@ -12,6 +12,9 @@
 
 namespace chromeos {
 
+// A 0.7 black to decorate status text. Same color is used for icon borders.
+static const SkColor kStatusTextHaloColor = SkColorSetARGB(0xB3, 0, 0, 0);
+
 ////////////////////////////////////////////////////////////////////////////////
 // StatusAreaButton
 
@@ -23,8 +26,8 @@ StatusAreaButton::StatusAreaButton(views::ViewMenuDelegate* menu_delegate)
   // Use an offset that is top aligned with toolbar.
   set_menu_offset(0, 2);
 
-  // Use a black halo for status text.
-  SetTextHaloColor(SK_ColorBLACK);
+  // Use a halo for status text as the icons.
+  SetTextHaloColor(kStatusTextHaloColor);
 }
 
 void StatusAreaButton::Paint(gfx::Canvas* canvas, bool for_drag) {

gfx/canvas_skia_linux.cc

@@ -278,6 +278,7 @@ void DrawStringContext::DrawWithHalo(const SkColor& text_color,
                         SkColorGetB(halo_color) / 255.0,
                         SkColorGetA(halo_color) / 255.0);
   cairo_set_line_width(text_cr, 2.0);
+  cairo_set_line_join(text_cr, CAIRO_LINE_JOIN_ROUND);
   cairo_stroke_preserve(text_cr);
 
   cairo_set_operator(text_cr, CAIRO_OPERATOR_SOURCE);