Add @media(-moz-windows-accent-color-applies)

#31 point 3

dom/base/nsGkAtomList.h

@@ -2230,6 +2230,7 @@ GK_ATOM(scrollbar_end_backward, "scrollbar-end-backward")
 GK_ATOM(scrollbar_end_forward, "scrollbar-end-forward")
 GK_ATOM(scrollbar_thumb_proportional, "scrollbar-thumb-proportional")
 GK_ATOM(overlay_scrollbars, "overlay-scrollbars")
+GK_ATOM(windows_accent_color_applies, "windows-accent-color-applies")
 GK_ATOM(windows_default_theme, "windows-default-theme")
 GK_ATOM(mac_graphite_theme, "mac-graphite-theme")
 GK_ATOM(mac_yosemite_theme, "mac-yosemite-theme")
@@ -2259,6 +2260,7 @@ GK_ATOM(_moz_scrollbar_end_backward, "-moz-scrollbar-end-backward")
 GK_ATOM(_moz_scrollbar_end_forward, "-moz-scrollbar-end-forward")
 GK_ATOM(_moz_scrollbar_thumb_proportional, "-moz-scrollbar-thumb-proportional")
 GK_ATOM(_moz_overlay_scrollbars, "-moz-overlay-scrollbars")
+GK_ATOM(_moz_windows_accent_color_applies, "-moz-windows-accent-color-applies")
 GK_ATOM(_moz_windows_default_theme, "-moz-windows-default-theme")
 GK_ATOM(_moz_mac_graphite_theme, "-moz-mac-graphite-theme")
 GK_ATOM(_moz_mac_yosemite_theme, "-moz-mac-yosemite-theme")

layout/style/nsCSSRuleProcessor.cpp

@@ -1127,6 +1127,11 @@ InitSystemMetrics()
     sSystemMetrics->AppendElement(nsGkAtoms::mac_yosemite_theme);
   }
 
+  rv = LookAndFeel::GetInt(LookAndFeel::eIntID_WindowsAccentColorApplies, &metricResult);
+  if (NS_SUCCEEDED(rv) && metricResult) {
+    sSystemMetrics->AppendElement(nsGkAtoms::windows_accent_color_applies);
+  }
+
   rv = LookAndFeel::GetInt(LookAndFeel::eIntID_DWMCompositor, &metricResult);
   if (NS_SUCCEEDED(rv) && metricResult) {
     sSystemMetrics->AppendElement(nsGkAtoms::windows_compositor);

layout/style/nsMediaFeatures.cpp

@@ -715,6 +715,14 @@ nsMediaFeatures::features[] = {
     { &nsGkAtoms::mac_yosemite_theme },
     GetSystemMetric
   },
+  {
+    &nsGkAtoms::_moz_windows_accent_color_applies,
+    nsMediaFeature::eMinMaxNotAllowed,
+    nsMediaFeature::eBoolInteger,
+    nsMediaFeature::eNoRequirements,
+    { &nsGkAtoms::windows_accent_color_applies },
+    GetSystemMetric
+  },
   {
     &nsGkAtoms::_moz_windows_compositor,
     nsMediaFeature::eMinMaxNotAllowed,

layout/style/test/test_media_queries.html

@@ -628,6 +628,7 @@ function run() {
   expression_should_be_parseable("-moz-windows-default-theme");
   expression_should_be_parseable("-moz-mac-graphite-theme");
   expression_should_be_parseable("-moz-mac-yosemite-theme");
+  expression_should_be_parseable("-moz-windows-accent-color-applies");
   expression_should_be_parseable("-moz-windows-compositor");
   expression_should_be_parseable("-moz-windows-classic");
   expression_should_be_parseable("-moz-windows-glass");
@@ -643,6 +644,7 @@ function run() {
   expression_should_be_parseable("-moz-windows-default-theme: 0");
   expression_should_be_parseable("-moz-mac-graphite-theme: 0");
   expression_should_be_parseable("-moz-mac-yosemite-theme: 0");
+  expression_should_be_parseable("-moz-windows-accent-color-applies: 0");
   expression_should_be_parseable("-moz-windows-compositor: 0");
   expression_should_be_parseable("-moz-windows-classic: 0");
   expression_should_be_parseable("-moz-windows-glass: 0");
@@ -658,6 +660,7 @@ function run() {
   expression_should_be_parseable("-moz-windows-default-theme: 1");
   expression_should_be_parseable("-moz-mac-graphite-theme: 1");
   expression_should_be_parseable("-moz-mac-yosemite-theme: 1");
+  expression_should_be_parseable("-moz-windows-accent-color-applies: 1");
   expression_should_be_parseable("-moz-windows-compositor: 1");
   expression_should_be_parseable("-moz-windows-classic: 1");
   expression_should_be_parseable("-moz-windows-glass: 1");
@@ -673,6 +676,7 @@ function run() {
   expression_should_not_be_parseable("-moz-windows-default-theme: -1");
   expression_should_not_be_parseable("-moz-mac-graphite-theme: -1");
   expression_should_not_be_parseable("-moz-mac-yosemite-theme: -1");
+  expression_should_not_be_parseable("-moz-windows-accent-color-applies: -1");
   expression_should_not_be_parseable("-moz-windows-compositor: -1");
   expression_should_not_be_parseable("-moz-windows-classic: -1");
   expression_should_not_be_parseable("-moz-windows-glass: -1");
@@ -688,6 +692,7 @@ function run() {
   expression_should_not_be_parseable("-moz-windows-default-theme: true");
   expression_should_not_be_parseable("-moz-mac-graphite-theme: true");
   expression_should_not_be_parseable("-moz-mac-yosemite-theme: true");
+  expression_should_not_be_parseable("-moz-windows-accent-color-applies: true");
   expression_should_not_be_parseable("-moz-windows-compositor: true");
   expression_should_not_be_parseable("-moz-windows-classic: true");
   expression_should_not_be_parseable("-moz-windows-glass: true");

widget/LookAndFeel.h

@@ -238,6 +238,15 @@ public:
     // Should menu items blink when they're chosen?
     eIntID_ChosenMenuItemsShouldBlink,
 
+    /*
+     * A Boolean value to determine whether the Windows accent color
+     * should be applied to the title bar.
+     *
+     * The value of this metric is not used on other platforms. These platforms
+     * should return NS_ERROR_NOT_IMPLEMENTED when queried for this metric.
+     */
+    eIntID_WindowsAccentColorApplies,
+
     /*
      * A Boolean value to determine whether the Windows default theme is
      * being used.

widget/windows/nsLookAndFeel.cpp

@@ -419,6 +419,12 @@ nsLookAndFeel::GetIntImpl(IntID aID, int32_t &aResult)
     case eIntID_DWMCompositor:
         aResult = nsUXThemeData::CheckForCompositor();
         break;
+    case eIntID_WindowsAccentColorApplies:
+        {
+          nscolor unused;
+          aResult = NS_SUCCEEDED(GetAccentColor(unused)) ? 1 : 0;
+        }
+        break;
     case eIntID_WindowsGlass:
         // Aero Glass is only available prior to Windows 8 when DWM is used.
         aResult = (nsUXThemeData::CheckForCompositor() && !IsWin8OrLater());