Remove unnecessary ColorMatrixColorFilter shadow

It was used to modify the Canvas description when a Bitmap was drawn, but the
description was overkill and did not have a valid testing use case. Just
include in the description that a ColorMatrixColorFilter is present.

PiperOrigin-RevId: 477999531

robolectric/src/test/java/org/robolectric/shadows/ShadowBitmapDrawableTest.java

@@ -72,9 +72,7 @@ public void withColorFilterSet_draw_shouldCopyDescriptionToCanvas() {
     assertThat(shadowOf(canvas).getDescription())
         .isEqualTo(
             "Bitmap for"
-                + " resource:org.robolectric:drawable/an_image"
-                + " with"
-                + " ColorMatrixColorFilter<1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0>");
+                + " resource:org.robolectric:drawable/an_image with ColorMatrixColorFilter");
   }
 
   @Test

robolectric/src/test/java/org/robolectric/shadows/ShadowBitmapTest.java

@@ -231,7 +231,7 @@ public void shouldReceiveDescriptionWhenDrawABitmapToCanvasWithAPaintEffect() {
     assertThat(shadowOf(bitmap1).getDescription())
         .isEqualTo(
             "Bitmap One\n"
-                + "Bitmap Two with ColorMatrixColorFilter<1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0>"
+                + "Bitmap Two with ColorMatrixColorFilter"
                 + " transformed by Matrix[pre=[], set={}, post=[]]");
   }
 

shadows/framework/src/main/java/org/robolectric/shadows/ShadowCanvas.java

@@ -15,8 +15,6 @@
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.ColorFilter;
-import android.graphics.ColorMatrix;
-import android.graphics.ColorMatrixColorFilter;
 import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.graphics.Path;
@@ -34,7 +32,6 @@
 import org.robolectric.annotation.Resetter;
 import org.robolectric.res.android.NativeObjRegistry;
 import org.robolectric.shadow.api.Shadow;
-import org.robolectric.util.Join;
 import org.robolectric.util.ReflectionHelpers;
 import org.robolectric.util.reflector.Direct;
 import org.robolectric.util.reflector.ForType;
@@ -301,29 +298,11 @@ private void describeBitmap(Bitmap bitmap, Paint paint) {
     if (paint != null) {
       ColorFilter colorFilter = paint.getColorFilter();
       if (colorFilter != null) {
-        if (colorFilter instanceof ColorMatrixColorFilter) {
-          ColorMatrixColorFilter colorMatrixColorFilter = (ColorMatrixColorFilter) colorFilter;
-          ShadowColorMatrixColorFilter shadowColorMatrixColorFilter =
-              Shadow.extract(colorMatrixColorFilter);
-          ColorMatrix colorMatrix = shadowColorMatrixColorFilter.getMatrix();
-          appendDescription(" with ColorMatrixColorFilter<" + formatColorMatric(colorMatrix) + ">");
-        } else {
-          appendDescription(" with " + colorFilter);
-        }
+        appendDescription(" with " + colorFilter.getClass().getSimpleName());
       }
     }
   }
 
-  private String formatColorMatric(ColorMatrix colorMatrix) {
-    List<String> floats = new ArrayList<>();
-    for (float f : colorMatrix.getArray()) {
-      String format = String.format("%.2f", f);
-      format = format.replace(".00", "");
-      floats.add(format);
-    }
-    return Join.join(",", floats);
-  }
-
   private void separateLines() {
     if (getDescription().length() != 0) {
       appendDescription("\n");