diff --git a/Android.mk b/Android.mk
index 110117b..83d39d4 100644
--- a/Android.mk
+++ b/Android.mk
@@ -64,7 +64,6 @@
 LOCAL_MODULE := launcher_protoutil_lib
 LOCAL_IS_HOST_MODULE := true
 LOCAL_JAR_MANIFEST := util/etc/manifest.txt
-LOCAL_STATIC_JAVA_LIBRARIES := host-libprotobuf-java-2.3.0-nano
 
 include $(BUILD_HOST_JAVA_LIBRARY)
 
diff --git a/WallpaperPicker/src/com/android/gallery3d/common/BitmapUtils.java b/WallpaperPicker/src/com/android/gallery3d/common/BitmapUtils.java
index a671ed2..4e276db 100644
--- a/WallpaperPicker/src/com/android/gallery3d/common/BitmapUtils.java
+++ b/WallpaperPicker/src/com/android/gallery3d/common/BitmapUtils.java
@@ -23,7 +23,6 @@
 import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.os.Build;
-import android.util.FloatMath;
 import android.util.Log;
 
 import java.io.ByteArrayOutputStream;
@@ -72,7 +71,7 @@
                 && minSideLength == UNCONSTRAINED) return 1;
 
         int lowerBound = (maxNumOfPixels == UNCONSTRAINED) ? 1 :
-                (int) FloatMath.ceil(FloatMath.sqrt((float) (w * h) / maxNumOfPixels));
+                (int) Math.ceil(Math.sqrt((double) (w * h) / maxNumOfPixels));
 
         if (minSideLength == UNCONSTRAINED) {
             return lowerBound;
@@ -96,7 +95,7 @@
 
     // Find the min x that 1 / x >= scale
     public static int computeSampleSizeLarger(float scale) {
-        int initialSize = (int) FloatMath.floor(1f / scale);
+        int initialSize = (int) Math.floor(1 / scale);
         if (initialSize <= 1) return 1;
 
         return initialSize <= 8
@@ -107,7 +106,7 @@
     // Find the max x that 1 / x <= scale.
     public static int computeSampleSize(float scale) {
         Utils.assertTrue(scale > 0);
-        int initialSize = Math.max(1, (int) FloatMath.ceil(1 / scale));
+        int initialSize = Math.max(1, (int) Math.ceil(1 / scale));
         return initialSize <= 8
                 ? Utils.nextPowerOf2(initialSize)
                 : (initialSize + 7) / 8 * 8;
diff --git a/WallpaperPicker/src/com/android/launcher3/CropView.java b/WallpaperPicker/src/com/android/launcher3/CropView.java
index 578b8ea..50f779a 100644
--- a/WallpaperPicker/src/com/android/launcher3/CropView.java
+++ b/WallpaperPicker/src/com/android/launcher3/CropView.java
@@ -21,7 +21,6 @@
 import android.graphics.Point;
 import android.graphics.RectF;
 import android.util.AttributeSet;
-import android.util.FloatMath;
 import android.view.MotionEvent;
 import android.view.ScaleGestureDetector;
 import android.view.ScaleGestureDetector.OnScaleGestureListener;
@@ -300,12 +299,12 @@
                     adjustment[0] = (edges.right - getWidth()) / scale;
                 }
                 if (edges.top > 0) {
-                    adjustment[1] = FloatMath.ceil(edges.top / scale);
+                    adjustment[1] = (float) Math.ceil(edges.top / scale);
                 } else if (edges.bottom < getHeight()) {
                     adjustment[1] = (edges.bottom - getHeight()) / scale;
                 }
                 for (int dim = 0; dim <= 1; dim++) {
-                    if (coef[dim] > 0) adjustment[dim] = FloatMath.ceil(adjustment[dim]);
+                    if (coef[dim] > 0) adjustment[dim] = (float) Math.ceil(adjustment[dim]);
                 }
 
                 mInverseRotateMatrix.mapPoints(adjustment);
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index 0ff1ef4..3b4bdcf 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -782,8 +782,7 @@
 
     public float getDistanceFromCell(float x, float y, int[] cell) {
         cellToCenterPoint(cell[0], cell[1], mTmpPoint);
-        float distance = (float) Math.sqrt( Math.pow(x - mTmpPoint[0], 2) +
-                Math.pow(y - mTmpPoint[1], 2));
+        float distance = (float) Math.hypot(x - mTmpPoint[0], y - mTmpPoint[1]);
         return distance;
     }
 
@@ -1340,8 +1339,7 @@
                     }
                 }
                 validRegions.push(currentRect);
-                double distance = Math.sqrt(Math.pow(cellXY[0] - pixelX, 2)
-                        + Math.pow(cellXY[1] - pixelY, 2));
+                double distance = Math.hypot(cellXY[0] - pixelX, cellXY[1] - pixelY);
 
                 if ((distance <= bestDistance && !contained) ||
                         currentRect.contains(bestRect)) {
@@ -1411,8 +1409,7 @@
                     }
                 }
 
-                float distance = (float)
-                        Math.sqrt((x - cellX) * (x - cellX) + (y - cellY) * (y - cellY));
+                float distance = (float) Math.hypot(x - cellX, y - cellY);
                 int[] curDirection = mTmpPoint;
                 computeDirectionVector(x - cellX, y - cellY, curDirection);
                 // The direction score is just the dot product of the two candidate direction
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index daf5556..b86967c 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -450,8 +450,7 @@
     }
 
     private float dist(PointF p0, PointF p1) {
-        return (float) Math.sqrt((p1.x - p0.x)*(p1.x-p0.x) +
-                (p1.y-p0.y)*(p1.y-p0.y));
+        return (float) Math.hypot(p1.x - p0.x, p1.y-p0.y);
     }
 
     private float weight(PointF a, PointF b,
diff --git a/src/com/android/launcher3/DragController.java b/src/com/android/launcher3/DragController.java
index 6d0a2be..09c6544 100644
--- a/src/com/android/launcher3/DragController.java
+++ b/src/com/android/launcher3/DragController.java
@@ -488,8 +488,7 @@
         checkTouchMove(dropTarget);
 
         // Check if we are hovering over the scroll areas
-        mDistanceSinceScroll +=
-            Math.sqrt(Math.pow(mLastTouch[0] - x, 2) + Math.pow(mLastTouch[1] - y, 2));
+        mDistanceSinceScroll += Math.hypot(mLastTouch[0] - x, mLastTouch[1] - y);
         mLastTouch[0] = x;
         mLastTouch[1] = y;
         checkScrollState(x, y);
diff --git a/src/com/android/launcher3/DragLayer.java b/src/com/android/launcher3/DragLayer.java
index a8a61ea..a1801cb 100644
--- a/src/com/android/launcher3/DragLayer.java
+++ b/src/com/android/launcher3/DragLayer.java
@@ -651,8 +651,7 @@
             final Runnable onCompleteRunnable, final int animationEndStyle, View anchorView) {
 
         // Calculate the duration of the animation based on the object's distance
-        final float dist = (float) Math.sqrt(Math.pow(to.left - from.left, 2) +
-                Math.pow(to.top - from.top, 2));
+        final float dist = (float) Math.hypot(to.left - from.left, to.top - from.top);
         final Resources res = getResources();
         final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist);
 
diff --git a/src/com/android/launcher3/FocusHelper.java b/src/com/android/launcher3/FocusHelper.java
index d529b39..3dbd428 100644
--- a/src/com/android/launcher3/FocusHelper.java
+++ b/src/com/android/launcher3/FocusHelper.java
@@ -601,8 +601,8 @@
                 boolean satisfiesRow = (lineDelta < 0) ? (tmpLp.cellY < row) : (tmpLp.cellY > row);
                 if (satisfiesRow &&
                         (newV instanceof BubbleTextView || newV instanceof FolderIcon)) {
-                    float tmpDistance = (float) Math.sqrt(Math.pow(tmpLp.cellX - lp.cellX, 2) +
-                            Math.pow(tmpLp.cellY - lp.cellY, 2));
+                    float tmpDistance = (float) Math.hypot(
+                            tmpLp.cellX - lp.cellX, tmpLp.cellY - lp.cellY);
                     if (tmpDistance < closestDistance) {
                         closestIndex = index;
                         closestDistance = tmpDistance;
diff --git a/src/com/android/launcher3/LauncherScroller.java b/src/com/android/launcher3/LauncherScroller.java
index 3bd0a78..a9b4955 100644
--- a/src/com/android/launcher3/LauncherScroller.java
+++ b/src/com/android/launcher3/LauncherScroller.java
@@ -20,7 +20,6 @@
 import android.content.Context;
 import android.hardware.SensorManager;
 import android.os.Build;
-import android.util.FloatMath;
 import android.view.ViewConfiguration;
 import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
@@ -409,7 +408,7 @@
 
             float dx = (float) (mFinalX - mStartX);
             float dy = (float) (mFinalY - mStartY);
-            float hyp = FloatMath.sqrt(dx * dx + dy * dy);
+            float hyp = (float) Math.hypot(dx, dy);
 
             float ndx = dx / hyp;
             float ndy = dy / hyp;
@@ -426,7 +425,7 @@
         mMode = FLING_MODE;
         mFinished = false;
 
-        float velocity = FloatMath.sqrt(velocityX * velocityX + velocityY * velocityY);
+        float velocity = (float) Math.hypot(velocityX, velocityY);
 
         mVelocity = velocity;
         mDuration = getSplineFlingDuration(velocity);