[Android] Add gyp support for multidex.

base/test/android/javatests/src/org/chromium/base/test/BaseInstrumentationTestRunner.java

Index: base/test/android/javatests/src/org/chromium/base/test/BaseInstrumentationTestRunner.java
diff --git a/base/test/android/javatests/src/org/chromium/base/test/BaseInstrumentationTestRunner.java b/base/test/android/javatests/src/org/chromium/base/test/BaseInstrumentationTestRunner.java
index cd202ccd61ff0b445543e5b66d95b86e7c7d1799..c18a3cbd709046fabe138c9fc51f8ec450b96310 100644
--- a/base/test/android/javatests/src/org/chromium/base/test/BaseInstrumentationTestRunner.java
+++ b/base/test/android/javatests/src/org/chromium/base/test/BaseInstrumentationTestRunner.java
@@ -20,6 +20,7 @@ import junit.framework.TestResult;
 import org.chromium.base.CommandLine;
 import org.chromium.base.Log;
 import org.chromium.base.SysUtils;
+import org.chromium.base.multidex.ChromiumMultiDex;
 import org.chromium.base.test.util.CommandLineFlags;
 import org.chromium.base.test.util.MinAndroidSdkLevel;
 import org.chromium.base.test.util.Restriction;
@@ -39,6 +40,12 @@ public class BaseInstrumentationTestRunner extends InstrumentationTestRunner {
     private static final int SLEEP_INTERVAL = 50; // milliseconds
     private static final int WAIT_DURATION = 5000; // milliseconds
 
+    @Override
+    public void onCreate(Bundle arguments) {
+        ChromiumMultiDex.install(getTargetContext());
+        super.onCreate(arguments);
+    }
+
     /**
      * An interface for classes that check whether a test case should be skipped.
      */