When HLS redirects are encountered recreate WebMediaPlayer.

media/blink/buffered_data_source.h

 // Copyright 2013 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 MEDIA_BLINK_BUFFERED_DATA_SOURCE_H_
 #define MEDIA_BLINK_BUFFERED_DATA_SOURCE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 96 matching lines @@
 
   // Cancels any open network connections once reaching the deferred state. If
   // |always_cancel| is false this is done only for preload=metadata, non-
   // streaming resources that have not started playback. If |always_cancel| is
   // true, all resource types will have their connections canceled. If already
   // deferred, connections will be immediately closed.
   virtual void OnBufferingHaveEnough(bool always_cancel) = 0;
 
   // Returns an estimate of the number of bytes held by the data source.
   virtual int64_t GetMemoryUsage() const = 0;
+
+  // Returns the post-Initialize() URL after redirects have been followed.

[hubbe, 2016/06/15 21:07:56]

Please document if it's ok for this to change if additional redirects are
encountered or not.

[DaleCurtis, 2016/06/15 23:11:30]

Done.

+  virtual GURL GetResponseOriginURL() const = 0;

[hubbe, 2016/06/15 21:07:56]

GetResponseOriginalURL only makes sense if you know what specific fields in the
webkit response class are.

How about GetUrlAfterRedirects() ?

[DaleCurtis, 2016/06/15 23:11:30]

Done.

 };
 
 // A data source capable of loading URLs and buffering the data using an
 // in-memory sliding window.
 //
 // BufferedDataSource must be created and destroyed on the thread associated
 // with the |task_runner| passed in the constructor.
 class MEDIA_BLINK_EXPORT BufferedDataSource
     : NON_EXPORTED_BASE(public BufferedDataSourceInterface) {
  public:
@@ skipping 56 matching lines @@
   // Cancels any open network connections once reaching the deferred state. If
   // |always_cancel| is false this is done only for preload=metadata, non-
   // streaming resources that have not started playback. If |always_cancel| is
   // true, all resource types will have their connections canceled. If already
   // deferred, connections will be immediately closed.
   void OnBufferingHaveEnough(bool always_cancel) override;
 
   // Returns an estimate of the number of bytes held by the data source.
   int64_t GetMemoryUsage() const override;
 
+  GURL GetResponseOriginURL() const override;
+
   // DataSource implementation.
   // Called from demuxer thread.
   void Stop() override;
 
   void Read(int64_t position,
             int size,
             uint8_t* data,
             const DataSource::ReadCB& read_cb) override;
   bool GetSize(int64_t* size_out) override;
   bool IsStreaming() override;
@@ skipping 130 matching lines @@
   // reaching into this class from multiple threads to attain a WeakPtr.
   base::WeakPtr<BufferedDataSource> weak_ptr_;
   base::WeakPtrFactory<BufferedDataSource> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BufferedDataSource);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_BUFFERED_DATA_SOURCE_H_