AAPT leave <gradient> alone for VDC

bug: 62421666
Test: Tested with changes for Gradient of VDC.

Change-Id: I07b39721aeaaafd888416a0f71f6cbd5fce97732

tools/aapt/ResourceTable.cpp

@@ -4847,6 +4847,7 @@ status_t ResourceTable::modifyForCompat(const Bundle* bundle,
     const String16 animatedVector16("animated-vector");
     const String16 pathInterpolator16("pathInterpolator");
     const String16 objectAnimator16("objectAnimator");
+    const String16 gradient16("gradient");
 
     const int minSdk = getMinSdkVersion(bundle);
     if (minSdk >= SDK_LOLLIPOP_MR1) {
@@ -4874,7 +4875,8 @@ status_t ResourceTable::modifyForCompat(const Bundle* bundle,
         if (bundle->getNoVersionVectors() && (node->getElementName() == vector16 ||
                     node->getElementName() == animatedVector16 ||
                     node->getElementName() == objectAnimator16 ||
-                    node->getElementName() == pathInterpolator16)) {
+                    node->getElementName() == pathInterpolator16 ||
+                    node->getElementName() == gradient16)) {
             // We were told not to version vector tags, so skip the children here.
             continue;
         }

tools/aapt2/cmd/Link.cpp

@@ -446,7 +446,7 @@ static bool IsTransitionElement(const std::string& name) {
 
 static bool IsVectorElement(const std::string& name) {
   return name == "vector" || name == "animated-vector" || name == "pathInterpolator" ||
-         name == "objectAnimator";
+         name == "objectAnimator" || name == "gradient";
 }
 
 template <typename T>