Revert of [Android] Update all Robolectric tests to Robolectric 3.0

testing/android/junit/java/src/org/chromium/testing/local/LocalRobolectricTestRunner.java

Index: testing/android/junit/java/src/org/chromium/testing/local/LocalRobolectricTestRunner.java
diff --git a/testing/android/junit/java/src/org/chromium/testing/local/LocalRobolectricTestRunner.java b/testing/android/junit/java/src/org/chromium/testing/local/LocalRobolectricTestRunner.java
index 171b9c6aaf13047e5bf29b0501502ff0530293e3..cf6202b0507d863108ed40b2e814e144b7561c21 100644
--- a/testing/android/junit/java/src/org/chromium/testing/local/LocalRobolectricTestRunner.java
+++ b/testing/android/junit/java/src/org/chromium/testing/local/LocalRobolectricTestRunner.java
@@ -6,38 +6,44 @@
 
 import org.junit.runners.model.InitializationError;
 
+import org.robolectric.AndroidManifest;
+import org.robolectric.DependencyResolver;
 import org.robolectric.RobolectricTestRunner;
+import org.robolectric.SdkConfig;
 import org.robolectric.annotation.Config;
-import org.robolectric.manifest.AndroidManifest;
 
 /**
- * A custom Robolectric Junit4 Test Runner. This test runner will ignore the
+ * A custom Robolectric Junit4 Test Runner. This test runner will load the
+ * "real" android jars from a local directory rather than use Maven to fetch
+ * them from the Maven Central repository. Additionally, it will ignore the
  * API level written in the AndroidManifest as that can cause issues if
- * Robolectric does not support that API level. The API level will be grabbed
- * from the robolectric Config annotation, or just be
- * |DEFAULT_ANDROID_API_LEVEL|
+ * robolectric does not support that API level.
  */
 public class LocalRobolectricTestRunner extends RobolectricTestRunner {
 
-    private static final int DEFAULT_ANDROID_API_LEVEL = 21;
+    private static final int ANDROID_API_LEVEL = 18;
 
     public LocalRobolectricTestRunner(Class<?> testClass) throws InitializationError {
         super(testClass);
     }
 
     @Override
-    protected int pickSdkVersion(Config config, AndroidManifest appManifest) {
+    protected final DependencyResolver getJarResolver() {
+        return new RobolectricClasspathDependencyResolver();
+    }
+
+    @Override
+    protected SdkConfig pickSdkVersion(AndroidManifest appManifest, Config config) {
         // Pulling from the manifest is dangerous as the apk might target a version of
         // android that robolectric does not yet support. We still allow the API level to
         // be overridden with the Config annotation.
-        if (config != null) {
-            if (config.sdk().length > 1) {
-                throw new IllegalArgumentException(
-                        "RobolectricTestRunner does not support multiple values for @Config.sdk");
-            } else if (config.sdk().length == 1) {
-                return config.sdk()[0];
-            }
-        }
-        return DEFAULT_ANDROID_API_LEVEL;
+        return config.emulateSdk() < 0
+                ? new SdkConfig(ANDROID_API_LEVEL) : super.pickSdkVersion(null, config);
     }
-}
+
+    @Override
+    protected int pickReportedSdkVersion(Config config, AndroidManifest appManifest) {
+        return config.reportSdk() < 0
+                ? ANDROID_API_LEVEL : super.pickReportedSdkVersion(config, appManifest);
+    }
+}