Support colors in AnimatedInterpolation on Android

Summary:
Color support for AnimatedInterpolation was incomplete with native drivers, as only rgba type strings were supported. There was also an issue where color props instead a StyleAnimatedNode would never get applied. We were also potentially duplicating color parsing support, which is already centralized in `normalizeColor` / `processColor`.

Changelog: [Android][Added] Enable AnimatedInterpolation to interpolate arbitrary color types.

Reviewed By: mdvacca

Differential Revision: D40571873

fbshipit-source-id: 41857ab0391279c5307bc31b855ea8fbcb4cccd8

ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedInterpolationTest.java

@@ -120,4 +120,42 @@ public class NativeAnimatedInterpolationTest {
                 InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY))
         .isEqualTo(5);
   }
+
+  @Test
+  public void testInterpolateColor() {
+    double[] input = new double[] {0, 1};
+    int[] output = new int[] {0xFF000000, 0xFFFF0000};
+    assertThat(InterpolationAnimatedNode.interpolateColor(0, input, output)).isEqualTo(0xFF000000);
+    assertThat(InterpolationAnimatedNode.interpolateColor(0.5, input, output))
+        .isEqualTo(0xFF7F0000);
+  }
+
+  @Test
+  public void testInterpolateString() {
+    double[] input = new double[] {0, 1};
+    double[][] output =
+        new double[][] {
+          new double[] {20, 20, 20, 80, 80, 80, 80, 20},
+          new double[] {40, 40, 33, 60, 60, 60, 65, 40},
+        };
+    String pattern = "M20,20L20,80L80,80L80,20Z";
+    assertThat(
+            InterpolationAnimatedNode.interpolateString(
+                pattern,
+                0,
+                input,
+                output,
+                InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY,
+                InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY))
+        .isEqualTo("M20,20L20,80L80,80L80,20Z");
+    assertThat(
+            InterpolationAnimatedNode.interpolateString(
+                pattern,
+                0.5,
+                input,
+                output,
+                InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY,
+                InterpolationAnimatedNode.EXTRAPOLATE_TYPE_IDENTITY))
+        .isEqualTo("M30,30L26.5,70L70,70L72.5,30Z");
+  }
 }