Bug 1266621 part 4 - Remove constructors of StyleComplexColor. r=heycam

So that they can be put inside anonymous structs and unions.

MozReview-Commit-ID: 8OMxkSZJEOz

--HG--
extra : rebase_source : 9626d350649f4ba6dba597e3df05fe1829307610

layout/style/StyleComplexColor.h

@@ -25,14 +25,8 @@ struct StyleComplexColor
   nscolor mColor;
   uint8_t mForegroundRatio;
 
-  StyleComplexColor() {}
-  StyleComplexColor(nscolor aColor, uint_fast8_t aForegroundRatio)
-    : mColor(aColor), mForegroundRatio(aForegroundRatio) {}
-
-  static StyleComplexColor FromColor(nscolor aColor)
-    { return StyleComplexColor(aColor, 0); }
-  static StyleComplexColor CurrentColor()
-    { return StyleComplexColor(NS_RGBA(0, 0, 0, 0), 255); }
+  static StyleComplexColor FromColor(nscolor aColor) { return {aColor, 0}; }
+  static StyleComplexColor CurrentColor() { return {NS_RGBA(0, 0, 0, 0), 255}; }
 
   bool IsNumericColor() const { return mForegroundRatio == 0; }
   bool IsCurrentColor() const { return mForegroundRatio == 255; }

layout/style/nsCSSValue.h

@@ -375,8 +375,7 @@ struct ComplexColorData
 
   StyleComplexColor ToComplexColor() const
   {
-    return StyleComplexColor(
-      mColor.ToColor(), ClampColor(mForegroundRatio * 255.0f));
+    return {mColor.ToColor(), ClampColor(mForegroundRatio * 255.0f)};
   }
 };