Prepare for -Wall for third-party code, -Wextra for chromium_code

android_webview/native/input_stream_impl.h

 // Copyright (c) 2012 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 ANDROID_WEBVIEW_NATIVE_INPUT_STREAM_H_
 #define ANDROID_WEBVIEW_NATIVE_INPUT_STREAM_H_
 
 #include <stdint.h>
 
 #include "android_webview/browser/input_stream.h"
@@ skipping 14 matching lines @@
 
   static const InputStreamImpl* FromInputStream(
       const InputStream* input_stream);
 
   // |stream| should be an instance of the InputStream Java class.
   // |stream| can't be null.
   InputStreamImpl(const base::android::JavaRef<jobject>& stream);
   ~InputStreamImpl() override;
 
   // Gets the underlying Java object. Guaranteed non-NULL.
-  const jobject jobj() const { return jobject_.obj(); }
+  jobject jobj() const { return jobject_.obj(); }
 
   // InputStream implementation.
   bool BytesAvailable(int* bytes_available) const override;
   bool Skip(int64_t n, int64_t* bytes_skipped) override;
   bool Read(net::IOBuffer* dest, int length, int* bytes_read) override;
 
  protected:
   // Parameterless constructor exposed for testing.
   InputStreamImpl();
 
  private:
   base::android::ScopedJavaGlobalRef<jobject> jobject_;
   base::android::ScopedJavaGlobalRef<jbyteArray> buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(InputStreamImpl);
 };
 
 bool RegisterInputStream(JNIEnv* env);
 
 } // namespace android_webview
 
 #endif //  ANDROID_WEBVIEW_NATIVE_INPUT_STREAM_H_