Menu theme tuning.

src/platform/theme/theme_draw.cc

Index: src/platform/theme/theme_draw.cc
diff --git a/src/platform/theme/theme_draw.cc b/src/platform/theme/theme_draw.cc
index dca3d59e5c63410b444753cf0b8d02014e6aa1a6..34c36e9b92394175a7838e0ebad0720e1bd5388f 100644
--- a/src/platform/theme/theme_draw.cc
+++ b/src/platform/theme/theme_draw.cc
@@ -109,13 +109,20 @@ static const double INDICATOR_STROKE_R = 0;
 static const double INDICATOR_STROKE_G = 0;
 static const double INDICATOR_STROKE_B = 0;
 
+static const double MENU_BG_R = 1;
+static const double MENU_BG_G = 1;
+static const double MENU_BG_B = 1;
+
 static const double MENU_BG_HIGHLIGHT_R = SELECTED_TEXT_BG_R;
 static const double MENU_BG_HIGHLIGHT_G = SELECTED_TEXT_BG_G;
 static const double MENU_BG_HIGHLIGHT_B = SELECTED_TEXT_BG_B;
 
-static const double MENU_BORDER_R = static_cast<double>(0x55) / 255.0;
-static const double MENU_BORDER_G = static_cast<double>(0x55) / 255.0;
-static const double MENU_BORDER_B = static_cast<double>(0x55) / 255.0;
+static const double MENU_GRADIENT_R0 = 1;
+static const double MENU_GRADIENT_G0 = 1;
+static const double MENU_GRADIENT_B0 = 1;
+static const double MENU_GRADIENT_R1 = static_cast<double>(0xF0) / 255.0;
+static const double MENU_GRADIENT_G1 = static_cast<double>(0xF0) / 255.0;
+static const double MENU_GRADIENT_B1 = static_cast<double>(0xF0) / 255.0;
 
 // Ideal arrow size for menus.
 static const int MENU_IDEAL_ARROW_SIZE = 5;
@@ -243,6 +250,9 @@ static const double TOOLTIP_SHADOW_ALPHAS[] = { 0.1, 0.2 };
 // plus TOOLTIP_SHADOW_DEPTH.
 static const int TOOLTIP_CORNER_RADIUS = 10 + TOOLTIP_SHADOW_DEPTH;
 
+// Widget name of GtkCombBox popup menu.
+static const char* kGtkComboBoxPopupMenu = "gtk-combobox-popup-menu";
+
 // Widget name of ChromeOS options tab.
 static const char* kChromeOsOptionsTabName = "chromeos-options-tab";
 
@@ -747,11 +757,17 @@ static void DrawMenuBorder(GtkStyle* style,
   cairo_rectangle(cr.get(), x, y, w, h);
 
   ScopedPattern pattern;
-  AddRoundRectGradient(cr.get(), &pattern, h, false);
-  cairo_fill_preserve(cr.get());
-
-  cairo_set_source_rgb(cr.get(), MENU_BORDER_R, MENU_BORDER_G, MENU_BORDER_B);
-  DrawSinglePixelWideRectangle(cr.get(), x, y, w, h);
+  if (WidgetHasName(widget, kGtkComboBoxPopupMenu)) {
+    cairo_set_source_rgb(cr.get(), MENU_BG_R, MENU_BG_G, MENU_BG_B);
+  } else {
+    pattern.reset(cairo_pattern_create_linear(0, 0, 0, h));
+    cairo_pattern_add_color_stop_rgb(pattern.get(), 0, MENU_GRADIENT_R0,
+                                     MENU_GRADIENT_G0, MENU_GRADIENT_B0);
+    cairo_pattern_add_color_stop_rgb(pattern.get(), 1, MENU_GRADIENT_R1,
+                                     MENU_GRADIENT_G1, MENU_GRADIENT_B1);
+    cairo_set_source(cr.get(), pattern.get());
+  }
+  cairo_fill(cr.get());
 }
 
 static void DrawMenuHorizontalSeparator(GtkStyle* style,