diff --git a/sdk/android/api/org/webrtc/RendererCommon.java b/sdk/android/api/org/webrtc/RendererCommon.java
index d6472393f7..f039a06f29 100644
--- a/sdk/android/api/org/webrtc/RendererCommon.java
+++ b/sdk/android/api/org/webrtc/RendererCommon.java
@@ -118,57 +118,6 @@ public class RendererCommon {
   // The minimum fraction of the frame content that will be shown for |SCALE_ASPECT_BALANCED|.
   // This limits excessive cropping when adjusting display size.
   private static float BALANCED_VISIBLE_FRACTION = 0.5625f;
-  // clang-format off
-  @Deprecated
-  public static final float[] identityMatrix() {
-    return new float[] {
-        1, 0, 0, 0,
-        0, 1, 0, 0,
-        0, 0, 1, 0,
-        0, 0, 0, 1};
-  }
-  // Matrix with transform y' = 1 - y.
-  @Deprecated
-  public static final float[] verticalFlipMatrix() {
-    return new float[] {
-        1,  0, 0, 0,
-        0, -1, 0, 0,
-        0,  0, 1, 0,
-        0,  1, 0, 1};
-  }
-
-  // Matrix with transform x' = 1 - x.
-  @Deprecated
-  public static final float[] horizontalFlipMatrix() {
-    return new float[] {
-        -1, 0, 0, 0,
-         0, 1, 0, 0,
-         0, 0, 1, 0,
-         1, 0, 0, 1};
-  }
-  // clang-format on
-
-  /**
-   * Returns texture matrix that will have the effect of rotating the frame |rotationDegree|
-   * clockwise when rendered.
-   */
-  @Deprecated
-  public static float[] rotateTextureMatrix(float[] textureMatrix, float rotationDegree) {
-    final float[] rotationMatrix = new float[16];
-    Matrix.setRotateM(rotationMatrix, 0, rotationDegree, 0, 0, 1);
-    adjustOrigin(rotationMatrix);
-    return multiplyMatrices(textureMatrix, rotationMatrix);
-  }
-
-  /**
-   * Returns new matrix with the result of a * b.
-   */
-  @Deprecated
-  public static float[] multiplyMatrices(float[] a, float[] b) {
-    final float[] resultMatrix = new float[16];
-    Matrix.multiplyMM(resultMatrix, 0, a, 0, b, 0);
-    return resultMatrix;
-  }
 
   /**
    * Returns layout transformation matrix that applies an optional mirror effect and compensates