Cleanup mojo_shell and sample_app a bit

mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/MojoShellActivity.java

Index: mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/MojoShellActivity.java
diff --git a/mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/MojoShellActivity.java b/mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/MojoShellActivity.java
deleted file mode 100644
index 4c117bf2a2422effde48236d6245e658557fc774..0000000000000000000000000000000000000000
--- a/mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/MojoShellActivity.java
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.mojo_shell_apk;
-
-import android.app.Activity;
-import android.content.Intent;
-import android.os.Bundle;
-import android.util.Log;
-
-import org.chromium.mojo_shell_apk.LibraryLoader;
-import org.chromium.mojo_shell_apk.MojoMain;
-
-/**
- * Activity for managing the Mojo Shell.
- */
-public class MojoShellActivity extends Activity {
-    private static final String TAG = "MojoShellActivity";
-
-    @Override
-    protected void onCreate(final Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        setContentView(R.layout.mojo_shell_activity);
-
-        try {
-            LibraryLoader.ensureInitialized();
-        } catch (UnsatisfiedLinkError e) {
-            Log.e(TAG, "libmojo_shell initialization failed.", e);
-            finish();
-            return;
-        }
-
-        String appUrl = getUrlFromIntent(getIntent());
-        MojoMain.start(this, appUrl);
-        Log.i(TAG, "Mojo started: " + appUrl);
-    }
-
-    private static String getUrlFromIntent(Intent intent) {
-        return intent != null ? intent.getDataString() : null;
-    }
-}