EDK: Remove MOJO_SYSTEM_IMPL_EXPORT, system_impl_export.h, etc.

mojo/edk/system/platform_handle_dispatcher.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 MOJO_EDK_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_
 #define MOJO_EDK_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_
 
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "mojo/edk/system/simple_dispatcher.h"
-#include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
 namespace system {
 
 // A dispatcher that simply wraps/transports a |PlatformHandle| (only for use by
 // the embedder).
-class MOJO_SYSTEM_IMPL_EXPORT PlatformHandleDispatcher final
-    : public SimpleDispatcher {
+class PlatformHandleDispatcher final : public SimpleDispatcher {
  public:
   static scoped_refptr<PlatformHandleDispatcher> Create(
       embedder::ScopedPlatformHandle platform_handle) {
     return make_scoped_refptr(
         new PlatformHandleDispatcher(platform_handle.Pass()));
   }
 
   embedder::ScopedPlatformHandle PassPlatformHandle();
 
   // |Dispatcher| public methods:
@@ skipping 29 matching lines @@
 
   embedder::ScopedPlatformHandle platform_handle_ MOJO_GUARDED_BY(mutex());
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(PlatformHandleDispatcher);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_