Add TestRules for content shell test and refactor test bases

tools/android/eclipse/.classpath

Index: tools/android/eclipse/.classpath
diff --git a/tools/android/eclipse/.classpath b/tools/android/eclipse/.classpath
index 12e7522aeaa96fe5f0d22b142b446372a2e38f08..67d205a1b3ec3b2c3aad89a098b3b2cfd6c5a043 100644
--- a/tools/android/eclipse/.classpath
+++ b/tools/android/eclipse/.classpath
@@ -229,6 +229,7 @@ to the classpath for downstream development. See "additional_entries" below.
     <classpathentry kind="lib" path="third_party/android_tools/sdk/extras/android/support/v13/android-support-v13.jar" sourcepath="third_party/android_tools/sdk/sources"/>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/extras/android/support/v7/appcompat/libs/android-support-v7-appcompat.jar" sourcepath="third_party/android_tools/sdk/sources"/>
     <classpathentry kind="lib" path="third_party/android_support_test_runner/lib/runner-0.5-release-no-dep.jar"/>
+    <classpathentry kind="lib" path="third_party/android_support_test_runner/lib/rules-0.5.jar"/>
     <classpathentry kind="lib" path="third_party/bouncycastle/lib/bcprov-jdk16-1.46.jar"/>
     <classpathentry kind="lib" path="third_party/byte_buddy/lib/byte-buddy-1.4.17.jar"/>
     <classpathentry kind="lib" path="third_party/findbugs/lib/findbugs.jar"/>