Register existing chrome junit tests in GN

chrome/android/BUILD.gn

Index: chrome/android/BUILD.gn
diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
index d6f5cf85cb6c50e0468d02c5d5f7b8e10019e40a..f149d9fac7c9bdc8d833e9b7ef2a9d5b9ca947e1 100644
--- a/chrome/android/BUILD.gn
+++ b/chrome/android/BUILD.gn
@@ -464,12 +464,17 @@ android_apk("chrome_shell_test_apk") {
 
 # GYP: //chrome/chrome_tests.gypi:chrome_junit_tests
 junit_binary("chrome_junit_tests") {
-  java_files =
-      [ "junit/src/org/chromium/chrome/browser/omaha/ResponseParserTest.java" ]
+  java_files = [
+    "junit/src/org/chromium/chrome/browser/omaha/ResponseParserTest.java",
+    "junit/src/org/chromium/chrome/browser/media/remote/MediaUrlResolverTest.java",
+    "junit/src/org/chromium/chrome/browser/media/remote/RemoteVideoInfoTest.java",
+    "junit/src/org/chromium/chrome/browser/media/remote/TransportControlTest.java",
+  ]
   deps = [
     ":chrome_java",
     "//base:base_java",
     "//base:base_java_test_support",
+    "//third_party/junit:hamcrest",
   ]
 }