[Android WebView] Call shouldInterceptRequest on a background thread

android_webview/native/aw_contents_background_thread_client.cc

Index: android_webview/native/aw_contents_background_thread_client.cc
diff --git a/android_webview/native/aw_contents_background_thread_client.cc b/android_webview/native/aw_contents_background_thread_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..415809c371c6de99525bc5f83b5d3997a1492a83
--- /dev/null
+++ b/android_webview/native/aw_contents_background_thread_client.cc
@@ -0,0 +1,31 @@
+// 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.
+
+#include "android_webview/native/aw_contents_background_thread_client.h"
+
+#include "jni/AwContentsBackgroundThreadClient_jni.h"
+
+namespace android_webview {
+
+// static
+base::android::ScopedJavaLocalRef<jobject>
+AwContentsBackgroundThreadClient::shouldInterceptRequest(
+    JNIEnv* env,
+    jobject obj,
+    jstring url,
+    jboolean isMainFrame,
+    jboolean hasUserGesture,
+    jstring method,
+    jobjectArray requestHeaderNames,
+    jobjectArray requestHeaderValues) {
+  return Java_AwContentsBackgroundThreadClient_shouldInterceptRequest(
+      env, obj, url, isMainFrame, hasUserGesture, method, requestHeaderNames,
+      requestHeaderValues);
+}
+
+bool RegisterAwContentsBackgroundThreadClient(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace android_webview