am fc5ab918: Merge "Avoid arc for edge effect drawing." into lmp-dev

import android.graphics.PorterDuff;

import android.graphics.PorterDuffXfermode;

import android.graphics.Rect;

import android.graphics.RectF;

import android.content.Context;

import android.graphics.Canvas;

    private float mPullDistance;

    private final Rect mBounds = new Rect();

    private final RectF mArcRect = new RectF();

    private final Paint mPaint = new Paint();

    private float mRadius;

    private float mBaseGlowHeight;

        final int count = canvas.save();

        final float y = mBounds.height();

        final float centerY = y - mRadius;

        final float centerX = mBounds.centerX();

        final float centerY = mBounds.height() - mRadius;

        mArcRect.set(centerX - mRadius, centerY - mRadius, centerX + mRadius, centerY + mRadius);

        canvas.scale(1.f, Math.min(mGlowScaleY, 1.f), centerX, 0);

        final float displacement = Math.max(0, Math.min(mDisplacement, 1.f)) - 0.5f;

        canvas.clipRect(mBounds);

        canvas.translate(translateX, 0);

        canvas.drawArc(mArcRect, 45, 90, false, mPaint);

        canvas.drawCircle(centerX, centerY, mRadius, mPaint);

        canvas.restoreToCount(count);

        boolean oneLastFrame = false;