Handle media access permission request

android_webview/java/src/org/chromium/android_webview/permission/AwPermissionRequest.java

Index: android_webview/java/src/org/chromium/android_webview/permission/AwPermissionRequest.java
diff --git a/android_webview/java/src/org/chromium/android_webview/permission/AwPermissionRequest.java b/android_webview/java/src/org/chromium/android_webview/permission/AwPermissionRequest.java
new file mode 100644
index 0000000000000000000000000000000000000000..c622b958ab2b2f5b30711b07fb4226e92f321c78
--- /dev/null
+++ b/android_webview/java/src/org/chromium/android_webview/permission/AwPermissionRequest.java
@@ -0,0 +1,89 @@
+// Copyright 2014 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.android_webview.permission;
+
+import android.net.Uri;
+import android.util.Log;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+import org.chromium.base.ThreadUtils;
+
+/**
+ * This class wraps permission request in Chromium side, and can only be created
+ * by native side.
+ */
+@JNINamespace("android_webview")
+public class AwPermissionRequest {
+    private static String TAG = "AwPermissionRequest";
+
+    private Uri mOrigin;
+    private long mResources;
+    private boolean mProcessed;
+
+    // AwPermissionRequest native instance.
+    private long mNativeAwPermissionRequest;
+
+    @CalledByNative
+    private static AwPermissionRequest create(long nativeAwPermissionRequest, String url,
+            long resources) {
+        if (nativeAwPermissionRequest == 0) return null;
+        Uri origin = Uri.parse(url);
+        return new AwPermissionRequest(nativeAwPermissionRequest, origin, resources);
+    }
+
+    private AwPermissionRequest(long nativeAwPermissionRequest, Uri origin,
+            long resources) {
+        mNativeAwPermissionRequest = nativeAwPermissionRequest;
+        mOrigin = origin;
+        mResources = resources;
+    }
+
+    public Uri getOrigin() {
+        return mOrigin;
+    }
+
+    public long getResources() {
+        return mResources;
+    }
+
+    public void grant() {
+        validate();
+        if (mNativeAwPermissionRequest != 0)
+            nativeOnAccept(mNativeAwPermissionRequest, true);
+        mProcessed = true;
+    }
+
+    public void deny() {
+        validate();
+        if (mNativeAwPermissionRequest != 0)
+            nativeOnAccept(mNativeAwPermissionRequest, false);
+        mProcessed = true;
+    }
+
+    @CalledByNative
+    private void detachNativeInstance() {
+        mNativeAwPermissionRequest = 0;
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        if (mNativeAwPermissionRequest == 0) return;
+        Log.e(TAG, "Neither grant() nor deny() has been called, "
+                + "the permission request is denied by default.");
+        deny();
+    }
+
+    private void validate() {
+        if (!ThreadUtils.runningOnUiThread())
+            throw new IllegalStateException(
+                    "Either grant() or deny() should be called on UI thread");
+
+        if (mProcessed)
+            throw new IllegalStateException("Either grant() or deny() has been already called.");
+    }
+
+    private native void nativeOnAccept(long nativeAwPermissionRequest, boolean allowed);
+}