Compressing images (#214)

Change-Id: I67055c78dc9fbb080fe00d2458ded57950fddd2c

Author: ashwinraghav

firebase-inappmessaging-display/src/main/res/drawable-anydpi-v21/btn_clear.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:width="24dp">
+
+  <path
+      android:fillColor="#ffffffff"
+      android:pathData="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59
+19 19 17.59 13.41 12z"/>
+  <path
+      android:pathData="M0 0h24v24H0z"/>
+</vector>

firebase-inappmessaging-display/src/main/res/drawable-anydpi-v21/image_placeholder.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:width="24dp">
+
+  <path
+      android:pathData="M0 0h24v24H0z"/>
+  <path
+      android:fillColor="#AAAAAA"
+      android:pathData="M21 19V5c0-1.1-0.9-2-2-2H5c-1.1 0-2 0.9-2 2v14c0 1.1 0.9 2 2 2h14c1.1 0 2-0.9
+2-2zM8.5 13.5l2.5 3.01L14.5 12l4.5 6H5l3.5-4.5z"/>
+</vector>