diff --git a/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java b/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
index b8c00e4..8c11c1c 100644
--- a/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
+++ b/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
@@ -79,7 +79,7 @@
         Context context = instrumentation.getContext();
         mDevice = UiDevice.getInstance(instrumentation);
         mDevice.setOrientationNatural();
-        mLauncher = new LauncherInstrumentation(instrumentation);
+        mLauncher = new LauncherInstrumentation();
 
         mOrderSensitiveRules = RuleChain.
                 outerRule(new NavigationModeSwitchRule(mLauncher)).
diff --git a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
index 1f4ba1a..b20fae4 100644
--- a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
+++ b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
@@ -92,8 +92,7 @@
 
     protected MainThreadExecutor mMainThreadExecutor = new MainThreadExecutor();
     protected final UiDevice mDevice = UiDevice.getInstance(getInstrumentation());
-    protected final LauncherInstrumentation mLauncher =
-            new LauncherInstrumentation(getInstrumentation());
+    protected final LauncherInstrumentation mLauncher = new LauncherInstrumentation();
     protected Context mTargetContext;
     protected String mTargetPackage;
 
diff --git a/tests/tapl/com/android/launcher3/tapl/AllApps.java b/tests/tapl/com/android/launcher3/tapl/AllApps.java
index f63612d..6dced8c 100644
--- a/tests/tapl/com/android/launcher3/tapl/AllApps.java
+++ b/tests/tapl/com/android/launcher3/tapl/AllApps.java
@@ -150,7 +150,7 @@
                         "Exceeded max scroll attempts: " + MAX_SCROLL_ATTEMPTS,
                         ++attempts <= MAX_SCROLL_ATTEMPTS);
 
-                mLauncher.scroll(allAppsContainer, Direction.UP, 1, margins, 50);
+                mLauncher.scroll(allAppsContainer, Direction.UP, margins, 50);
             }
 
             try (LauncherInstrumentation.Closable c1 = mLauncher.addContextLayer("scrolled up")) {
@@ -177,7 +177,7 @@
             final UiObject2 allAppsContainer = verifyActiveContainer();
             // Start the gesture in the center to avoid starting at elements near the top.
             mLauncher.scroll(
-                    allAppsContainer, Direction.DOWN, 1, new Rect(0, 0, 0, mHeight / 2), 10);
+                    allAppsContainer, Direction.DOWN, new Rect(0, 0, 0, mHeight / 2), 10);
             verifyActiveContainer();
         }
     }
@@ -191,7 +191,7 @@
             final UiObject2 allAppsContainer = verifyActiveContainer();
             // Start the gesture in the center, for symmetry with forward.
             mLauncher.scroll(
-                    allAppsContainer, Direction.UP, 1, new Rect(0, mHeight / 2, 0, 0), 10);
+                    allAppsContainer, Direction.UP, new Rect(0, mHeight / 2, 0, 0), 10);
             verifyActiveContainer();
         }
     }
diff --git a/tests/tapl/com/android/launcher3/tapl/BaseOverview.java b/tests/tapl/com/android/launcher3/tapl/BaseOverview.java
index 25e6e8c..49c0c89 100644
--- a/tests/tapl/com/android/launcher3/tapl/BaseOverview.java
+++ b/tests/tapl/com/android/launcher3/tapl/BaseOverview.java
@@ -55,7 +55,7 @@
             final int leftMargin = mLauncher.getTestInfo(
                     TestProtocol.REQUEST_OVERVIEW_LEFT_GESTURE_MARGIN).
                     getInt(TestProtocol.TEST_INFO_RESPONSE_FIELD);
-            mLauncher.scroll(overview, Direction.LEFT, 1, new Rect(leftMargin, 0, 0, 0), 20);
+            mLauncher.scroll(overview, Direction.LEFT, new Rect(leftMargin, 0, 0, 0), 20);
             verifyActiveContainer();
         }
     }
@@ -93,7 +93,7 @@
             final int rightMargin = mLauncher.getTestInfo(
                     TestProtocol.REQUEST_OVERVIEW_RIGHT_GESTURE_MARGIN).
                     getInt(TestProtocol.TEST_INFO_RESPONSE_FIELD);
-            mLauncher.scroll(overview, Direction.RIGHT, 1, new Rect(0, 0, rightMargin, 0), 20);
+            mLauncher.scroll(overview, Direction.RIGHT, new Rect(0, 0, rightMargin, 0), 20);
             verifyActiveContainer();
         }
     }
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 1c8f92e..d89ec8b 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -51,6 +51,7 @@
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.test.InstrumentationRegistry;
 import androidx.test.uiautomator.By;
 import androidx.test.uiautomator.BySelector;
 import androidx.test.uiautomator.Configurator;
@@ -144,6 +145,15 @@
     /**
      * Constructs the root of TAPL hierarchy. You get all other objects from it.
      */
+    public LauncherInstrumentation() {
+        this(InstrumentationRegistry.getInstrumentation());
+    }
+
+    /**
+     * Constructs the root of TAPL hierarchy. You get all other objects from it.
+     * Deprecated: use the constructor without parameters instead.
+     */
+    @Deprecated
     public LauncherInstrumentation(Instrumentation instrumentation) {
         mInstrumentation = instrumentation;
         mDevice = UiDevice.getInstance(instrumentation);
@@ -789,7 +799,6 @@
         scroll(
                 container,
                 Direction.DOWN,
-                1f,
                 new Rect(
                         0,
                         0,
@@ -798,7 +807,7 @@
                 150);
     }
 
-    void scroll(UiObject2 container, Direction direction, float percent, Rect margins, int steps) {
+    void scroll(UiObject2 container, Direction direction, Rect margins, int steps) {
         final Rect rect = container.getVisibleBounds();
         if (margins != null) {
             rect.left += margins.left;
@@ -816,7 +825,7 @@
             case UP: {
                 startX = endX = rect.centerX();
                 final int vertCenter = rect.centerY();
-                final float halfGestureHeight = rect.height() * percent / 2.0f;
+                final float halfGestureHeight = rect.height() / 2.0f;
                 startY = (int) (vertCenter - halfGestureHeight) + 1;
                 endY = (int) (vertCenter + halfGestureHeight);
             }
@@ -824,7 +833,7 @@
             case DOWN: {
                 startX = endX = rect.centerX();
                 final int vertCenter = rect.centerY();
-                final float halfGestureHeight = rect.height() * percent / 2.0f;
+                final float halfGestureHeight = rect.height() / 2.0f;
                 startY = (int) (vertCenter + halfGestureHeight) - 1;
                 endY = (int) (vertCenter - halfGestureHeight);
             }
@@ -832,7 +841,7 @@
             case LEFT: {
                 startY = endY = rect.centerY();
                 final int horizCenter = rect.centerX();
-                final float halfGestureWidth = rect.width() * percent / 2.0f;
+                final float halfGestureWidth = rect.width() / 2.0f;
                 startX = (int) (horizCenter - halfGestureWidth) + 1;
                 endX = (int) (horizCenter + halfGestureWidth);
             }
@@ -840,7 +849,7 @@
             case RIGHT: {
                 startY = endY = rect.centerY();
                 final int horizCenter = rect.centerX();
-                final float halfGestureWidth = rect.width() * percent / 2.0f;
+                final float halfGestureWidth = rect.width() / 2.0f;
                 startX = (int) (horizCenter + halfGestureWidth) - 1;
                 endX = (int) (horizCenter - halfGestureWidth);
             }
diff --git a/tests/tapl/com/android/launcher3/tapl/Widgets.java b/tests/tapl/com/android/launcher3/tapl/Widgets.java
index aabcac2..51239c9 100644
--- a/tests/tapl/com/android/launcher3/tapl/Widgets.java
+++ b/tests/tapl/com/android/launcher3/tapl/Widgets.java
@@ -48,7 +48,6 @@
             mLauncher.scroll(
                     widgetsContainer,
                     Direction.DOWN,
-                    1f,
                     new Rect(0, 0, 0, mLauncher.getBottomGestureMargin(widgetsContainer)),
                     FLING_STEPS);
             try (LauncherInstrumentation.Closable c1 = mLauncher.addContextLayer("flung forward")) {
@@ -69,7 +68,6 @@
             mLauncher.scroll(
                     widgetsContainer,
                     Direction.UP,
-                    1f,
                     new Rect(0, 0, widgetsContainer.getVisibleBounds().width(), 0),
                     FLING_STEPS);
             try (LauncherInstrumentation.Closable c1 = mLauncher.addContextLayer("flung back")) {
diff --git a/tests/tapl/com/android/launcher3/tapl/Workspace.java b/tests/tapl/com/android/launcher3/tapl/Workspace.java
index da74b66..01edcc2 100644
--- a/tests/tapl/com/android/launcher3/tapl/Workspace.java
+++ b/tests/tapl/com/android/launcher3/tapl/Workspace.java
@@ -180,7 +180,7 @@
      */
     public void flingForward() {
         final UiObject2 workspace = verifyActiveContainer();
-        mLauncher.scroll(workspace, Direction.RIGHT, 1f,
+        mLauncher.scroll(workspace, Direction.RIGHT,
                 new Rect(0, 0, mLauncher.getEdgeSensitivityWidth(), 0),
                 FLING_STEPS);
         verifyActiveContainer();
@@ -192,7 +192,7 @@
      */
     public void flingBackward() {
         final UiObject2 workspace = verifyActiveContainer();
-        mLauncher.scroll(workspace, Direction.LEFT, 1f,
+        mLauncher.scroll(workspace, Direction.LEFT,
                 new Rect(mLauncher.getEdgeSensitivityWidth(), 0, 0, 0),
                 FLING_STEPS);
         verifyActiveContainer();