Revert 281133 "chrome.hid: enrich model with report IDs"

trunk/src/device/hid/hid_connection.h

 // Copyright 2014 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 DEVICE_HID_HID_CONNECTION_H_
 #define DEVICE_HID_HID_CONNECTION_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
-#include "base/threading/thread_checker.h"
 #include "device/hid/hid_device_info.h"
 #include "net/base/io_buffer.h"
 
 namespace device {
 
 class HidConnection : public base::RefCountedThreadSafe<HidConnection> {
  public:
-  enum SpecialReportIds {
-    kNullReportId = 0x00,
-    kAnyReportId = 0xFF,
-  };
-
   typedef base::Callback<void(bool success, size_t size)> IOCallback;
 
+  virtual void Read(scoped_refptr<net::IOBufferWithSize> buffer,
+                    const IOCallback& callback) = 0;
+  virtual void Write(uint8_t report_id,
+                     scoped_refptr<net::IOBufferWithSize> buffer,
+                     const IOCallback& callback) = 0;
+  virtual void GetFeatureReport(uint8_t report_id,
+                                scoped_refptr<net::IOBufferWithSize> buffer,
+                                const IOCallback& callback) = 0;
+  virtual void SendFeatureReport(uint8_t report_id,
+                                 scoped_refptr<net::IOBufferWithSize> buffer,
+                                 const IOCallback& callback) = 0;
+
   const HidDeviceInfo& device_info() const { return device_info_; }
-  bool has_protected_collection() const { return has_protected_collection_; }
-  bool has_report_id() const { return has_report_id_; }
-  const base::ThreadChecker& thread_checker() const { return thread_checker_; }
-
-  void Read(scoped_refptr<net::IOBufferWithSize> buffer,
-            const IOCallback& callback);
-  void Write(uint8_t report_id,
-             scoped_refptr<net::IOBufferWithSize> buffer,
-             const IOCallback& callback);
-  void GetFeatureReport(uint8_t report_id,
-                        scoped_refptr<net::IOBufferWithSize> buffer,
-                        const IOCallback& callback);
-  void SendFeatureReport(uint8_t report_id,
-                         scoped_refptr<net::IOBufferWithSize> buffer,
-                         const IOCallback& callback);
 
  protected:
   friend class base::RefCountedThreadSafe<HidConnection>;
+  friend struct HidDeviceInfo;
 
   explicit HidConnection(const HidDeviceInfo& device_info);
   virtual ~HidConnection();
 
-  virtual void PlatformRead(scoped_refptr<net::IOBufferWithSize> buffer,
-                            const IOCallback& callback) = 0;
-  virtual void PlatformWrite(uint8_t report_id,
-                             scoped_refptr<net::IOBufferWithSize> buffer,
-                             const IOCallback& callback) = 0;
-  virtual void PlatformGetFeatureReport(
-      uint8_t report_id,
-      scoped_refptr<net::IOBufferWithSize> buffer,
-      const IOCallback& callback) = 0;
-  virtual void PlatformSendFeatureReport(
-      uint8_t report_id,
-      scoped_refptr<net::IOBufferWithSize> buffer,
-      const IOCallback& callback) = 0;
-
-  // PlatformRead implementation must call this method on read
-  // success, rather than directly running the callback.
-  // In case incoming buffer is empty or protected, it is filtered
-  // and this method returns false. Otherwise it runs the callback
-  // and returns true.
-  bool CompleteRead(scoped_refptr<net::IOBufferWithSize> buffer,
-                    const IOCallback& callback);
-
  private:
-  bool IsReportIdProtected(const uint8_t report_id);
-
   const HidDeviceInfo device_info_;
-  bool has_report_id_;
-  bool has_protected_collection_;
-  base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(HidConnection);
 };
 
 struct PendingHidReport {
   PendingHidReport();
   ~PendingHidReport();
 
   scoped_refptr<net::IOBufferWithSize> buffer;
 };
 
 struct PendingHidRead {
   PendingHidRead();
   ~PendingHidRead();
 
   scoped_refptr<net::IOBufferWithSize> buffer;
   HidConnection::IOCallback callback;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_HID_HID_CONNECTION_H_