Update demo with features from support lib 23.2.0

demos/build.gradle

Index: demos/build.gradle
diff --git a/demos/build.gradle b/demos/build.gradle
index ed4b93cb17a74c65414d37c0203f94579be83423..5271d71f08c86f0596f860ff7ad0c40d9a3914b1 100644
--- a/demos/build.gradle
+++ b/demos/build.gradle
@@ -2,11 +2,11 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    buildToolsVersion "23.0.2"
 
     defaultConfig {
         applicationId "org.chromium.customtabsdemos"
-        minSdkVersion 16
+        minSdkVersion 15
         targetSdkVersion 23
         versionCode 1
         versionName "1.0"
@@ -21,8 +21,8 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:23.1.1'
-    compile 'com.android.support:recyclerview-v7:23.1.1'
-    compile 'com.android.support:customtabs:23.1.1'
+    compile 'com.android.support:appcompat-v7:23.2.0'
+    compile 'com.android.support:recyclerview-v7:23.2.0'
+    compile 'com.android.support:customtabs:23.2.0'
     compile project(':shared')
 }