[Android] Refactor browser test execution.

content/shell/android/browsertests/src/org/chromium/content_shell/browsertests/ContentShellBrowserTestActivity.java

Index: content/shell/android/browsertests/src/org/chromium/content_shell/browsertests/ContentShellBrowserTestActivity.java
diff --git a/content/shell/android/browsertests/src/org/chromium/content_shell/browsertests/ContentShellBrowserTestActivity.java b/content/shell/android/browsertests/src/org/chromium/content_shell/browsertests/ContentShellBrowserTestActivity.java
new file mode 100644
index 0000000000000000000000000000000000000000..663d4a4b542be04a03c8192ef56c9c1b8634d7f5
--- /dev/null
+++ b/content/shell/android/browsertests/src/org/chromium/content_shell/browsertests/ContentShellBrowserTestActivity.java
@@ -0,0 +1,89 @@
+// Copyright 2015 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.content_shell.browsertests;
+
+import android.view.Window;
+import android.view.WindowManager;
+
+import org.chromium.base.Log;
+import org.chromium.base.annotations.SuppressFBWarnings;
+import org.chromium.base.library_loader.LibraryLoader;
+import org.chromium.base.library_loader.LibraryProcessType;
+import org.chromium.base.library_loader.ProcessInitException;
+import org.chromium.content.browser.BrowserStartupController;
+import org.chromium.content_shell.ShellManager;
+import org.chromium.native_test.NativeBrowserTestActivity;
+import org.chromium.ui.base.ActivityWindowAndroid;
+import org.chromium.ui.base.WindowAndroid;
+
+import java.io.File;
+
+/** An Activity base class for running browser tests against ContentShell. */
+public abstract class ContentShellBrowserTestActivity extends NativeBrowserTestActivity {
+
+    private static final String TAG = "cr.native_test";
+
+    private ShellManager mShellManager;
+    private WindowAndroid mWindowAndroid;
+
+    /** Deletes a file or directory along with any of its children.
+     *
+     *  Note that, like File.delete(), this returns false if the file or directory couldn't be
+     *  fully deleted. This means that, in the directory case, some files may be deleted even if
+     *  the entire directory couldn't be.
+     *
+     *  @param file The file or directory to delete.
+     *  @return Whether or not the file or directory was deleted.
+     */
+    private static boolean deleteRecursive(File file) {
+        if (file == null) return true;
+
+        File[] children = file.listFiles();
+        if (children != null) {
+            for (File child : children) {
+                if (!deleteRecursive(child)) {
+                    return false;
+                }
+            }
+        }
+        return file.delete();
+    }
+
+    /** Initializes the browser process.
+     *
+     *  This generally includes loading native libraries and switching to the native command line,
+     *  among other things.
+     *
+     *  @param privateDataDirectory The private data directory to clear before starting the
+     *      browser process. Can be null.
+     *  @throws ProcessInitException if the native libraries cannot be loaded.
+     */
+    @Override
+    @SuppressFBWarnings("DM_EXIT")
+    protected void initializeBrowserProcess() {
+        try {
+            LibraryLoader.get(LibraryProcessType.PROCESS_BROWSER).ensureInitialized();
+        } catch (ProcessInitException e) {
+            Log.e(TAG, "Cannot load content_browsertests.", e);
+            System.exit(-1);
+        }
+        BrowserStartupController.get(getApplicationContext(), LibraryProcessType.PROCESS_BROWSER)
+                .initChromiumBrowserProcessForTests();
+
+        setContentView(getTestActivityViewId());
+        mShellManager = (ShellManager) findViewById(getShellManagerViewId());
+        mWindowAndroid = new ActivityWindowAndroid(this);
+        mShellManager.setWindow(mWindowAndroid, false);
+
+        Window wind = this.getWindow();
+        wind.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
+        wind.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
+        wind.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
+    }
+
+    protected abstract int getTestActivityViewId();
+
+    protected abstract int getShellManagerViewId();
+}