[Android WebView] Call shouldInterceptRequest on a background thread

android_webview/native/aw_contents_background_thread_client.h

 // 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.
 
-#ifndef BASE_ANDROID_JAVA_RUNTIME_H_
-#define BASE_ANDROID_JAVA_RUNTIME_H_
+#ifndef ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_BACKGROUND_THREAD_CLIENT_H_
+#define ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_BACKGROUND_THREAD_CLIENT_H_
 
 #include "base/android/scoped_java_ref.h"
-#include "base/base_export.h"
 
-namespace base {
-namespace android {
+namespace android_webview {
 
-// Wrapper class for using the java.lang.Runtime object from jni.
-class BASE_EXPORT JavaRuntime {
+class AwContentsBackgroundThreadClient {
  public:
-  // Registers the jni class (once per process).
-  static bool Register(JNIEnv* env);
-
-  // Fills the total memory used and memory allocated for objects by the java
-  // heap in the current process. Returns true on success.
-  static void GetMemoryUsage(long* total_memory, long* free_memory);
+  static base::android::ScopedJavaLocalRef<jobject> shouldInterceptRequest(
+      JNIEnv* env,
+      jobject obj,
+      jstring url,
+      jboolean isMainFrame,
+      jboolean hasUserGesture,
+      jstring method,
+      jobjectArray requestHeaderNames,
+      jobjectArray requestHeaderValues);
 };
 
-}  // namespace android
-}  // namespace base
+// JNI registration method.
+bool RegisterAwContentsBackgroundThreadClient(JNIEnv* env);
 
-#endif  // BASE_ANDROID_JAVA_RUNTIME_H_
+}
+
+#endif  // ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_BACKGROUND_THREAD_CLIENT_H_