Merge cherrypicks of ['googleplex-android-review.googlesource.com/24030571'] into udc-release.

import android.util.FloatProperty;

import android.util.Log;

import android.util.SparseArray;

import android.util.TypedValue;

import android.view.KeyEvent;

import android.view.LayoutInflater;

import android.view.MotionEvent;

                0,

                0 // Bottom left

        };

        final TypedValue value = new TypedValue();

        getContext().getTheme().resolveAttribute(android.R.attr.colorBackground, value, true);

        mBottomSheetBackgroundColor = value.data;

        mBottomSheetBackgroundColor =

                Themes.getAttrColor(getContext(), R.attr.materialColorSurfaceDim);

        updateBackgroundVisibility(mActivityContext.getDeviceProfile());

        mSearchUiManager.initializeSearch(this);

    }