Replace the --platform vm option with --kernel-binaries option.

runtime/bin/dfe.h

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_BIN_DFE_H_
 #define RUNTIME_BIN_DFE_H_
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/globals.h"
 
 namespace dart {
 namespace bin {
 
 class DFE {
  public:
   DFE();
   ~DFE();
 
   const char* frontend_filename() const { return frontend_filename_; }
   void set_frontend_filename(const char* name) { frontend_filename_ = name; }
   bool UseDartFrontend() const { return frontend_filename_ != NULL; }
 
   const char* platform_binary_filename() const {
     return platform_binary_filename_;
   }
-  void set_platform_binary_filename(const char* name) {
-    platform_binary_filename_ = name;
-  }
+
+  void SetKernelBinaries(const char* name);
+
   bool UsePlatformBinary() const { return platform_binary_filename_ != NULL; }
 
   void* kernel_platform() const { return kernel_platform_; }
 
   // Method to reload a script into a running a isolate.
   // If the specified script [url] is not a kernel IR, compile it first using
   // DFE and then reload the resulting kernel IR into the isolate.
   // Returns Dart_Null if successful, otherwise an error object is returned.
   Dart_Handle ReloadScript(Dart_Isolate isolate, const char* url_string);
 
@@ skipping 18 matching lines @@
   // Tries to read [script_uri] as a Kernel IR file.
   // Returns `true` if successful and sets [kernel_file] and [kernel_length]
   // to be the kernel IR contents.
   // The caller is responsible for free()ing [kernel_file] if `true`
   // was returned.
   bool TryReadKernelFile(const char* script_uri,
                          const uint8_t** kernel_ir,
                          intptr_t* kernel_ir_size);
 
   const char* frontend_filename_;
-  const char* platform_binary_filename_;
+  char* platform_binary_filename_;
   void* kernel_platform_;
 
   DISALLOW_COPY_AND_ASSIGN(DFE);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // RUNTIME_BIN_DFE_H_