android webview: Upstream android 7 glue layer

android_webview/glue/java/src/com/android/webview/chromium/ServiceWorkerClientAdapter.java

+// Copyright 2016 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 com.android.webview.chromium;
+
+import android.annotation.TargetApi;
+import android.net.Uri;
+import android.os.Build;
+import android.webkit.ServiceWorkerClient;
+import android.webkit.WebResourceRequest;
+import android.webkit.WebResourceResponse;
+
+import org.chromium.android_webview.AwContentsClient.AwWebResourceRequest;
+import org.chromium.android_webview.AwServiceWorkerClient;
+import org.chromium.android_webview.AwWebResourceResponse;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * An adapter class that forwards the callbacks from {@link AwServiceWorkerClient}
+ * to the corresponding {@link ServiceWorkerClient}.
+ */
+@TargetApi(Build.VERSION_CODES.N)
+public class ServiceWorkerClientAdapter extends AwServiceWorkerClient {
+
+    private ServiceWorkerClient mServiceWorkerClient;
+
+    public ServiceWorkerClientAdapter(ServiceWorkerClient client) {
+        mServiceWorkerClient = client;
+    }
+
+    @Override
+    public AwWebResourceResponse shouldInterceptRequest(AwWebResourceRequest request) {
+        WebResourceResponse response = mServiceWorkerClient.shouldInterceptRequest(
+                new WebResourceRequestImpl(request));
+        if (response == null) return null;
+
+        // AwWebResourceResponse should support null headers. b/16332774.
+        Map<String, String> responseHeaders = response.getResponseHeaders();
+        if (responseHeaders == null) responseHeaders = new HashMap<String, String>();
+
+        return new AwWebResourceResponse(
+                response.getMimeType(),
+                response.getEncoding(),
+                response.getData(),
+                response.getStatusCode(),
+                response.getReasonPhrase(),
+                responseHeaders);
+    }
+
+    private static class WebResourceRequestImpl implements WebResourceRequest {
+        private final AwWebResourceRequest mRequest;
+
+        public WebResourceRequestImpl(AwWebResourceRequest request) {
+            mRequest = request;
+        }
+
+        @Override
+        public Uri getUrl() {
+            return Uri.parse(mRequest.url);
+        }
+
+        @Override
+        public boolean isForMainFrame() {
+            return mRequest.isMainFrame;
+        }
+
+        @Override
+        public boolean hasGesture() {
+            return mRequest.hasUserGesture;
+        }
+
+        @Override
+        public String getMethod() {
+            return mRequest.method;
+        }
+
+        @Override
+        public Map<String, String> getRequestHeaders() {
+            return mRequest.requestHeaders;
+        }
+
+        // TODO(mnaganov): Uncomment when we completely switch builds to the next API level.
+        //@Override
+        public boolean isRedirect() {
+            return mRequest.isRedirect;
+        }
+    }
+}