Initial commit of the blimp/ folder and target

blimp/client/android/java/src/org/chromium/blimp/BlimpLibraryLoader.java

+// 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.blimp;
+
+import android.content.Context;
+import android.os.Handler;
+
+import org.chromium.base.ResourceExtractor;
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.base.library_loader.LibraryLoader;
+import org.chromium.base.library_loader.LibraryProcessType;
+import org.chromium.base.library_loader.ProcessInitException;
+
+/**
+ * A simple utility class to asynchronously load and register the native libraries associated with
+ * Blimp.
+ */
+@JNINamespace("blimp")
+public final class BlimpLibraryLoader {
+    /**
+     * A callback interface that is notified with the native library load results.
+     */
+    public interface Callback {
+        /**
+         * Called when the load attempt is finished (regardless of whether or not it was
+         * successful).
+         * @param success Whether or not the native library was successfully loaded.
+         */
+        void onStartupComplete(boolean success);
+    }
+
+    /**
+     * Disallow instantiation of this class.
+     */
+    private BlimpLibraryLoader() {}
+
+    /**
+     * Starts asynchronously loading and registering the native libraries.
+     * @param context               A {@link Context} object.
+     * @param callback              A {@link BlimpLibraryLoader.Callback} to be notified upon
+     *                              completion.
+     * @throws ProcessInitException
+     */
+    public static void startAsync(final Context context, final Callback callback)
+            throws ProcessInitException {
+        ResourceExtractor extractor = ResourceExtractor.get(context);
+        extractor.startExtractingResources();
+
+        LibraryLoader.get(LibraryProcessType.PROCESS_BROWSER).ensureInitialized(context);
+
+        extractor.addCompletionCallback(new Runnable() {
+            @Override
+            public void run() {
+                final boolean initResult = nativeInitializeBlimp(context.getApplicationContext());
+                new Handler().post(new Runnable() {
+                    @Override
+                    public void run() {
+                        // Only run nativeStartBlimp if we properly initialized native.
+                        boolean startResult = initResult ? nativeStartBlimp() : false;
+                        if (callback != null) callback.onStartupComplete(startResult);
+                    }
+                });
+            }
+        });
+    }
+
+    // Native Methods ------------------------------------------------------------------------------
+    private static native boolean nativeInitializeBlimp(Context context);
+    private static native boolean nativeStartBlimp();
+}