Fix a lint issue with MediaResourceGetterTest.java.

Currently, the lint warns against using the hardcoded "sdcard" strings. We
should use Environment.getExternalStorageDirectory().getPath() instead of it,
but the path could be inconsistent depending upon the state of the real or
emulated device upon which we are testing. So this CL adds @SuppressLint to
suppress the warnings.

BUG=327768

Review URL: https://codereview.chromium.org/304633003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274376 0039d316-1c4b-4281-b951-d872f2087c98

content/public/android/javatests/src/org/chromium/content/browser/MediaResourceGetterTest.java

@@ -4,6 +4,7 @@
 
 package org.chromium.content.browser;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.media.MediaMetadataRetriever;
@@ -23,6 +24,7 @@ import java.util.Map;
 /**
  * Tests for MediaResourceGetter.
  */
+@SuppressLint("SdCardPath")
 public class MediaResourceGetterTest extends InstrumentationTestCase {
     private static final String TEST_HTTP_URL = "http://example.com";
     private static final String TEST_USER_AGENT = // Anyhting, really