Be explicit about character set.

The default character set is always UTF-8 anyway on Android, but
we don't want our code to behave any differently where it's not
(e.g. robolectric test runs could potentially run in an environment
where UTF-8 isn't the default?).

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=211953885

library/core/src/main/java/com/google/android/exoplayer2/upstream/DataSchemeDataSource.java

@@ -59,7 +59,7 @@ public final class DataSchemeDataSource extends BaseDataSource {
       }
     } else {
       // TODO: Add support for other charsets.
-      data = URLDecoder.decode(dataString, C.ASCII_NAME).getBytes();
+      data = Util.getUtf8Bytes(URLDecoder.decode(dataString, C.ASCII_NAME));
     }
     transferStarted(dataSpec);
     return data.length;

library/core/src/test/java/com/google/android/exoplayer2/upstream/DataSchemeDataSourceTest.java

@@ -20,9 +20,8 @@ import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.fail;
 
 import android.net.Uri;
-import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.util.Util;
 import java.io.IOException;
-import java.nio.charset.Charset;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -46,16 +45,20 @@ public final class DataSchemeDataSourceTest {
     DataSpec dataSpec = buildDataSpec("data:text/plain;base64,eyJwcm92aWRlciI6IndpZGV2aW5lX3Rlc3QiL"
         + "CJjb250ZW50X2lkIjoiTWpBeE5WOTBaV0Z5Y3c9PSIsImtleV9pZHMiOlsiMDAwMDAwMDAwMDAwMDAwMDAwMDAwM"
         + "DAwMDAwMDAwMDAiXX0=");
-    DataSourceAsserts.assertDataSourceContent(schemeDataDataSource, dataSpec,
-        ("{\"provider\":\"widevine_test\",\"content_id\":\"MjAxNV90ZWFycw==\",\"key_ids\":"
-        + "[\"00000000000000000000000000000000\"]}").getBytes(Charset.forName(C.UTF8_NAME)));
+    DataSourceAsserts.assertDataSourceContent(
+        schemeDataDataSource,
+        dataSpec,
+        Util.getUtf8Bytes(
+            "{\"provider\":\"widevine_test\",\"content_id\":\"MjAxNV90ZWFycw==\",\"key_ids\":"
+                + "[\"00000000000000000000000000000000\"]}"));
   }
 
   @Test
   public void testAsciiData() throws IOException {
-    DataSourceAsserts.assertDataSourceContent(schemeDataDataSource,
+    DataSourceAsserts.assertDataSourceContent(
+        schemeDataDataSource,
         buildDataSpec("data:,A%20brief%20note"),
-        "A brief note".getBytes(Charset.forName(C.UTF8_NAME)));
+        Util.getUtf8Bytes("A brief note"));
   }
 
   @Test
@@ -68,7 +71,7 @@ public final class DataSchemeDataSourceTest {
     assertThat(schemeDataDataSource.read(buffer, 9, 15)).isEqualTo(9);
     assertThat(schemeDataDataSource.read(buffer, 1, 0)).isEqualTo(0);
     assertThat(schemeDataDataSource.read(buffer, 1, 1)).isEqualTo(RESULT_END_OF_INPUT);
-    assertThat(new String(buffer, 0, 18, C.UTF8_NAME)).isEqualTo("012345678901234567");
+    assertThat(Util.fromUtf8Bytes(buffer, 0, 18)).isEqualTo("012345678901234567");
   }
 
   @Test

library/core/src/test/java/com/google/android/exoplayer2/util/ReusableBufferedOutputStreamTest.java

@@ -28,8 +28,8 @@ import org.robolectric.RobolectricTestRunner;
 @RunWith(RobolectricTestRunner.class)
 public final class ReusableBufferedOutputStreamTest {
 
-  private static final byte[] TEST_DATA_1 = "test data 1".getBytes();
-  private static final byte[] TEST_DATA_2 = "2 test data".getBytes();
+  private static final byte[] TEST_DATA_1 = Util.getUtf8Bytes("test data 1");
+  private static final byte[] TEST_DATA_2 = Util.getUtf8Bytes("2 test data");
 
   @Test
   public void testReset() throws Exception {

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/PlayerEmsgHandler.java

@@ -291,7 +291,7 @@ public final class PlayerEmsgHandler implements Handler.Callback {
 
   private static long getManifestPublishTimeMsInEmsg(EventMessage eventMessage) {
     try {
-      return parseXsDateTime(new String(eventMessage.messageData));
+      return parseXsDateTime(Util.fromUtf8Bytes(eventMessage.messageData));
     } catch (ParserException ignored) {
       // if we can't parse this event, ignore
       return C.TIME_UNSET;

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/manifest/DashManifestParser.java

@@ -862,7 +862,7 @@ public class DashManifestParser extends DefaultHandler
       throws XmlPullParserException, IOException {
     scratchOutputStream.reset();
     XmlSerializer xmlSerializer = Xml.newSerializer();
-    xmlSerializer.setOutput(scratchOutputStream, null);
+    xmlSerializer.setOutput(scratchOutputStream, C.UTF8_NAME);
     // Start reading everything between <Event> and </Event>, and serialize them into an Xml
     // byte array.
     xpp.nextToken();

library/dash/src/test/java/com/google/android/exoplayer2/source/dash/manifest/DashManifestParserTest.java

@@ -22,6 +22,7 @@ import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.metadata.emsg.EventMessage;
 import com.google.android.exoplayer2.testutil.TestUtil;
+import com.google.android.exoplayer2.util.Util;
 import java.io.IOException;
 import java.nio.charset.Charset;
 import java.util.Collections;
@@ -117,7 +118,8 @@ public class DashManifestParserTest {
                 "",
                 1500000,
                 1,
-                ("<![CDATA[<BroadcastEvent>\n"
+                Util.getUtf8Bytes(
+                    "<![CDATA[<BroadcastEvent>\n"
                         + "      <Program crid=\"crid://broadcaster.example.com/ABCDEF\"/>\n"
                         + "      <InstanceDescription>\n"
                         + "      <Title xml:lang=\"en\">The title</Title>\n"
@@ -128,8 +130,7 @@ public class DashManifestParserTest {
                         + "      <mpeg7:Region>GB</mpeg7:Region>\n"
                         + "      </ParentalGuidance>\n"
                         + "      </InstanceDescription>\n"
-                        + "      </BroadcastEvent>]]>")
-                    .getBytes(),
+                        + "      </BroadcastEvent>]]>"),
                 300000000));
 
     // assert xml-structured event stream
@@ -142,12 +143,12 @@ public class DashManifestParserTest {
                 "",
                 1000000,
                 2,
-                ("<scte35:Signal>\n"
+                Util.getUtf8Bytes(
+                    "<scte35:Signal>\n"
                         + "         <scte35:Binary>\n"
                         + "         /DAIAAAAAAAAAAAQAAZ/I0VniQAQAgBDVUVJQAAAAH+cAAAAAA==\n"
                         + "         </scte35:Binary>\n"
-                        + "       </scte35:Signal>")
-                    .getBytes(),
+                        + "       </scte35:Signal>"),
                 1000000000));
   }
 

testutils/src/main/java/com/google/android/exoplayer2/testutil/TestUtil.java

@@ -148,7 +148,7 @@ public class TestUtil {
   }
 
   public static String getString(Context context, String fileName) throws IOException {
-    return new String(getByteArray(context, fileName));
+    return Util.fromUtf8Bytes(getByteArray(context, fileName));
   }
 
   public static Bitmap readBitmapFromFile(Context context, String fileName) throws IOException {