diff --git a/services/surfaceflinger/tests/LayerUpdate_test.cpp b/services/surfaceflinger/tests/LayerUpdate_test.cpp
index e5c2ec8..39d9206 100644
--- a/services/surfaceflinger/tests/LayerUpdate_test.cpp
+++ b/services/surfaceflinger/tests/LayerUpdate_test.cpp
@@ -462,38 +462,6 @@
     }
 }
 
-TEST_F(ChildLayerTest, ReparentChildren) {
-    asTransaction([&](Transaction& t) {
-        t.show(mChild);
-        t.setPosition(mChild, 10, 10);
-        t.setPosition(mFGSurfaceControl, 64, 64);
-    });
-
-    {
-        mCapture = screenshot();
-        // Top left of foreground must now be visible
-        mCapture->expectFGColor(64, 64);
-        // But 10 pixels in we should see the child surface
-        mCapture->expectChildColor(74, 74);
-        // And 10 more pixels we should be back to the foreground surface
-        mCapture->expectFGColor(84, 84);
-    }
-
-    asTransaction(
-            [&](Transaction& t) { t.reparentChildren(mFGSurfaceControl, mBGSurfaceControl); });
-
-    {
-        mCapture = screenshot();
-        mCapture->expectFGColor(64, 64);
-        // In reparenting we should have exposed the entire foreground surface.
-        mCapture->expectFGColor(74, 74);
-        // And the child layer should now begin at 10, 10 (since the BG
-        // layer is at (0, 0)).
-        mCapture->expectBGColor(9, 9);
-        mCapture->expectChildColor(10, 10);
-    }
-}
-
 TEST_F(ChildLayerTest, ChildrenSurviveParentDestruction) {
     sp<SurfaceControl> mGrandChild =
             createSurface(mClient, "Grand Child", 10, 10, PIXEL_FORMAT_RGBA_8888, 0, mChild.get());
@@ -539,7 +507,7 @@
 
     asTransaction([&](Transaction& t) {
         t.reparent(mChild, nullptr);
-        t.reparentChildren(mChild, mFGSurfaceControl);
+        t.reparent(mGrandChild, mFGSurfaceControl);
     });
 
     {
diff --git a/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp b/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp
index d9cab42..09bd775 100644
--- a/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp
+++ b/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp
@@ -194,7 +194,6 @@
     bool deferredTransactionUpdateFound(const SurfaceChange& change, bool foundDeferred);
     bool reparentUpdateFound(const SurfaceChange& change, bool found);
     bool relativeParentUpdateFound(const SurfaceChange& change, bool found);
-    bool reparentChildrenUpdateFound(const SurfaceChange& change, bool found);
     bool shadowRadiusUpdateFound(const SurfaceChange& change, bool found);
     bool surfaceUpdateFound(const Trace& trace, SurfaceChange::SurfaceChangeCase changeCase);
 
@@ -231,7 +230,6 @@
     void deferredTransactionUpdate(Transaction&);
     void reparentUpdate(Transaction&);
     void relativeParentUpdate(Transaction&);
-    void reparentChildrenUpdate(Transaction&);
     void shadowRadiusUpdate(Transaction&);
     void surfaceCreation(Transaction&);
     void displayCreation(Transaction&);
@@ -410,10 +408,6 @@
     t.setRelativeLayer(mBGSurfaceControl, mFGSurfaceControl, RELATIVE_Z);
 }
 
-void SurfaceInterceptorTest::reparentChildrenUpdate(Transaction& t) {
-    t.reparentChildren(mBGSurfaceControl, mFGSurfaceControl);
-}
-
 void SurfaceInterceptorTest::shadowRadiusUpdate(Transaction& t) {
     t.setShadowRadius(mBGSurfaceControl, SHADOW_RADIUS_UPDATE);
 }
@@ -445,7 +439,6 @@
     runInTransaction(&SurfaceInterceptorTest::secureFlagUpdate);
     runInTransaction(&SurfaceInterceptorTest::deferredTransactionUpdate);
     runInTransaction(&SurfaceInterceptorTest::reparentUpdate);
-    runInTransaction(&SurfaceInterceptorTest::reparentChildrenUpdate);
     runInTransaction(&SurfaceInterceptorTest::relativeParentUpdate);
     runInTransaction(&SurfaceInterceptorTest::shadowRadiusUpdate);
 }
@@ -660,16 +653,6 @@
     return found;
 }
 
-bool SurfaceInterceptorTest::reparentChildrenUpdateFound(const SurfaceChange& change, bool found) {
-    bool hasId(change.reparent_children().parent_id() == mFGLayerId);
-    if (hasId && !found) {
-        found = true;
-    } else if (hasId && found) {
-        []() { FAIL(); }();
-    }
-    return found;
-}
-
 bool SurfaceInterceptorTest::shadowRadiusUpdateFound(const SurfaceChange& change,
                                                      bool foundShadowRadius) {
     bool hasShadowRadius(change.shadow_radius().radius() == SHADOW_RADIUS_UPDATE);
@@ -738,9 +721,6 @@
                         case SurfaceChange::SurfaceChangeCase::kReparent:
                             foundUpdate = reparentUpdateFound(change, foundUpdate);
                             break;
-                        case SurfaceChange::SurfaceChangeCase::kReparentChildren:
-                            foundUpdate = reparentChildrenUpdateFound(change, foundUpdate);
-                            break;
                         case SurfaceChange::SurfaceChangeCase::kRelativeParent:
                             foundUpdate = relativeParentUpdateFound(change, foundUpdate);
                             break;
@@ -771,7 +751,6 @@
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kSecureFlag));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kDeferredTransaction));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kReparent));
-    ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kReparentChildren));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kRelativeParent));
 }
 
@@ -937,11 +916,6 @@
                 SurfaceChange::SurfaceChangeCase::kReparent);
 }
 
-TEST_F(SurfaceInterceptorTest, InterceptReparentChildrenUpdateWorks) {
-    captureTest(&SurfaceInterceptorTest::reparentChildrenUpdate,
-                SurfaceChange::SurfaceChangeCase::kReparentChildren);
-}
-
 TEST_F(SurfaceInterceptorTest, InterceptRelativeParentUpdateWorks) {
     captureTest(&SurfaceInterceptorTest::relativeParentUpdate,
                 SurfaceChange::SurfaceChangeCase::kRelativeParent);
diff --git a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
index 820f248..c081f9b 100644
--- a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
+++ b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
@@ -1766,30 +1766,6 @@
         EXPECT_TRUE(framesAreSame(referenceFrame2, Base::sFakeComposer->getLatestFrame()));
     }
 
-    void Test_ReparentChildren() {
-        {
-            TransactionScope ts(*Base::sFakeComposer);
-            ts.show(mChild);
-            ts.setPosition(mChild, 10, 10);
-            ts.setPosition(Base::mFGSurfaceControl, 64, 64);
-        }
-        auto referenceFrame = Base::mBaseFrame;
-        referenceFrame[Base::FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 64 + 64, 64 + 64};
-        referenceFrame[CHILD_LAYER].mDisplayFrame =
-                hwc_rect_t{64 + 10, 64 + 10, 64 + 10 + 10, 64 + 10 + 10};
-        EXPECT_TRUE(framesAreSame(referenceFrame, Base::sFakeComposer->getLatestFrame()));
-
-        {
-            TransactionScope ts(*Base::sFakeComposer);
-            ts.reparentChildren(Base::mFGSurfaceControl, Base::mBGSurfaceControl);
-        }
-
-        auto referenceFrame2 = referenceFrame;
-        referenceFrame2[Base::FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 64 + 64, 64 + 64};
-        referenceFrame2[CHILD_LAYER].mDisplayFrame = hwc_rect_t{10, 10, 10 + 10, 10 + 10};
-        EXPECT_TRUE(framesAreSame(referenceFrame2, Base::sFakeComposer->getLatestFrame()));
-    }
-
     // Regression test for b/37673612
     void Test_ChildrenWithParentBufferTransform() {
         {
@@ -1886,10 +1862,6 @@
     Test_LayerAlpha();
 }
 
-TEST_F(ChildLayerTest_2_1, DISABLED_ReparentChildren) {
-    Test_ReparentChildren();
-}
-
 // Regression test for b/37673612
 TEST_F(ChildLayerTest_2_1, DISABLED_ChildrenWithParentBufferTransform) {
     Test_ChildrenWithParentBufferTransform();
diff --git a/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp b/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp
index 7e602a2..0bb7e31 100644
--- a/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp
@@ -122,7 +122,6 @@
 
     void addChild(sp<Layer> layer, sp<Layer> child);
     void removeChild(sp<Layer> layer, sp<Layer> child);
-    void reparentChildren(sp<Layer> layer, sp<Layer> child);
     void commitTransaction();
 
     TestableSurfaceFlinger mFlinger;
@@ -152,10 +151,6 @@
     layer.get()->removeChild(child.get());
 }
 
-void SetFrameRateTest::reparentChildren(sp<Layer> parent, sp<Layer> newParent) {
-    parent.get()->reparentChildren(newParent);
-}
-
 void SetFrameRateTest::commitTransaction() {
     for (auto layer : mLayers) {
         layer->pushPendingState();
@@ -433,41 +428,6 @@
     EXPECT_EQ(FRAME_RATE_NO_VOTE, child2_1->getFrameRateForLayerTree());
 }
 
-TEST_P(SetFrameRateTest, SetAndGetReparentChildren) {
-    EXPECT_CALL(*mMessageQueue, invalidate()).Times(1);
-
-    const auto& layerFactory = GetParam();
-
-    auto parent = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
-    auto parent2 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
-    auto child1 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
-    auto child2 = mLayers.emplace_back(layerFactory->createLayer(mFlinger));
-
-    addChild(parent, child1);
-    addChild(child1, child2);
-
-    child2->setFrameRate(FRAME_RATE_VOTE1);
-    commitTransaction();
-    EXPECT_EQ(FRAME_RATE_TREE, parent->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_NO_VOTE, parent2->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_TREE, child1->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_VOTE1, child2->getFrameRateForLayerTree());
-
-    reparentChildren(parent, parent2);
-    commitTransaction();
-    EXPECT_EQ(FRAME_RATE_NO_VOTE, parent->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_TREE, parent2->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_TREE, child1->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_VOTE1, child2->getFrameRateForLayerTree());
-
-    child2->setFrameRate(FRAME_RATE_NO_VOTE);
-    commitTransaction();
-    EXPECT_EQ(FRAME_RATE_NO_VOTE, parent->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_NO_VOTE, parent2->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_NO_VOTE, child1->getFrameRateForLayerTree());
-    EXPECT_EQ(FRAME_RATE_NO_VOTE, child2->getFrameRateForLayerTree());
-}
-
 INSTANTIATE_TEST_SUITE_P(PerLayerType, SetFrameRateTest,
                          testing::Values(std::make_shared<BufferQueueLayerFactory>(),
                                          std::make_shared<BufferStateLayerFactory>(),