--- a/layout/style/ServoBindings.cpp
+++ b/layout/style/ServoBindings.cpp
@@ -1673,32 +1673,16 @@ Gecko_CSSValue_SetPercentage(nsCSSValueB
 
 float
 Gecko_CSSValue_GetPercentage(nsCSSValueBorrowed aCSSValue)
 {
   return aCSSValue->GetPercentValue();
 }
 
 void
-Gecko_CSSValue_SetAngle(nsCSSValueBorrowedMut aCSSValue, float aRadians)
-{
-  aCSSValue->SetFloatValue(aRadians, eCSSUnit_Radian);
-}
-
-float
-Gecko_CSSValue_GetAngle(nsCSSValueBorrowed aCSSValue)
-{
-  // Unfortunately nsCSSValue.GetAngleValueInRadians() returns double,
-  // so we use GetAngleValue() instead.
-  MOZ_ASSERT(aCSSValue->GetUnit() == eCSSUnit_Radian,
-             "The unit should be eCSSUnit_Radian");
-  return aCSSValue->GetAngleValue();
-}
-
-void
 Gecko_CSSValue_SetCalc(nsCSSValueBorrowedMut aCSSValue, nsStyleCoord::CalcValue aCalc)
 {
   aCSSValue->SetCalcValue(&aCalc);
 }
 
 nsStyleCoord::CalcValue
 Gecko_CSSValue_GetCalc(nsCSSValueBorrowed aCSSValue)
 {

--- a/layout/style/ServoBindings.h
+++ b/layout/style/ServoBindings.h
@@ -399,28 +399,26 @@ NS_DECL_THREADSAFE_FFI_REFCOUNTING(nsSty
 
 nsCSSValueSharedList* Gecko_NewCSSValueSharedList(uint32_t len);
 
 // Getter for nsCSSValue
 nsCSSValueBorrowedMut Gecko_CSSValue_GetArrayItem(nsCSSValueBorrowedMut css_value, int32_t index);
 // const version of the above function.
 nsCSSValueBorrowed Gecko_CSSValue_GetArrayItemConst(nsCSSValueBorrowed css_value, int32_t index);
 nscoord Gecko_CSSValue_GetAbsoluteLength(nsCSSValueBorrowed css_value);
-float Gecko_CSSValue_GetAngle(nsCSSValueBorrowed css_value);
 nsCSSKeyword Gecko_CSSValue_GetKeyword(nsCSSValueBorrowed aCSSValue);
 float Gecko_CSSValue_GetNumber(nsCSSValueBorrowed css_value);
 float Gecko_CSSValue_GetPercentage(nsCSSValueBorrowed css_value);
 nsStyleCoord::CalcValue Gecko_CSSValue_GetCalc(nsCSSValueBorrowed aCSSValue);
 
 void Gecko_CSSValue_SetAbsoluteLength(nsCSSValueBorrowedMut css_value, nscoord len);
 void Gecko_CSSValue_SetNormal(nsCSSValueBorrowedMut css_value);
 void Gecko_CSSValue_SetNumber(nsCSSValueBorrowedMut css_value, float number);
 void Gecko_CSSValue_SetKeyword(nsCSSValueBorrowedMut css_value, nsCSSKeyword keyword);
 void Gecko_CSSValue_SetPercentage(nsCSSValueBorrowedMut css_value, float percent);
-void Gecko_CSSValue_SetAngle(nsCSSValueBorrowedMut css_value, float radians);
 void Gecko_CSSValue_SetCalc(nsCSSValueBorrowedMut css_value, nsStyleCoord::CalcValue calc);
 void Gecko_CSSValue_SetFunction(nsCSSValueBorrowedMut css_value, int32_t len);
 void Gecko_CSSValue_SetString(nsCSSValueBorrowedMut css_value,
                               const uint8_t* string, uint32_t len, nsCSSUnit unit);
 void Gecko_CSSValue_SetStringFromAtom(nsCSSValueBorrowedMut css_value,
                                       nsIAtom* atom, nsCSSUnit unit);
 void Gecko_CSSValue_SetArray(nsCSSValueBorrowedMut css_value, int32_t len);
 void Gecko_CSSValue_SetURL(nsCSSValueBorrowedMut css_value, ServoBundledURI uri);