Fix build for Contacts and PhoneCommon

Fix this :

packages/apps/Contacts/../PhoneCommon/res/values/colors.xml:21: error: Error: No resource found that matches the given name (at 'background_dialpad' with value '@*android:color/material_blue_grey').

packages/apps/Contacts/res/values/colors.xml:47: error: Error: No resource found that matches the given name (at 'expanding_entry_card_background_color' with value '@*android:color/material_blue_grey').

packages/apps/Contacts/res/values/colors.xml:50: error: Error: No resource found that matches the given name (at 'card_margin_color' with value '@*android:color/material_blue_grey').

packages/apps/Contacts/res/values/styles.xml:55: error: Error: No resource found that matches the given name (at 'android:colorBackground' with value '@*android:drawable/material_bg_blue_grey').

packages/apps/Contacts/res/values/styles.xml:55: error: Error: No resource found that matches the given name (at 'android:colorBackground' with value '@*android:drawable/material_bg_blue_grey').