Pass path to platform kernel binary to kernel-service.

runtime/bin/dfe.cc

Index: runtime/bin/dfe.cc
diff --git a/runtime/bin/dfe.cc b/runtime/bin/dfe.cc
index 23a272361cbe3bc93654737ab1fc9591c1e7524c..aacd532a66b63fd7bb2d5e913cc9bfc250f26a30 100644
--- a/runtime/bin/dfe.cc
+++ b/runtime/bin/dfe.cc
@@ -73,7 +73,8 @@ Dart_Handle DFE::ReloadScript(Dart_Isolate isolate, const char* url_string) {
     // TODO(asiva): We will have to change this API to pass in a list of files
     // that have changed. For now just pass in the main url_string and have it
     // recompile the script.
-    Dart_KernelCompilationResult kresult = Dart_CompileToKernel(url_string);
+    Dart_KernelCompilationResult kresult =
+        Dart_CompileToKernel(url_string, platform_binary_filename_);

[Siggi Cherem (dart-lang), 2017/08/16 23:29:18]

Could you add a TODO here that we should be passing 'outline.dill' instead of
'platform.dill' (same below in the other call to Dart_CompileToKernel)?

[aam, 2017/08/17 02:10:51]

Done.

     if (kresult.status != Dart_KernelCompilationStatus_Ok) {
       return Dart_NewApiError(kresult.error);
     }
@@ -98,7 +99,8 @@ Dart_Handle DFE::ReloadScript(Dart_Isolate isolate, const char* url_string) {
 void* DFE::CompileAndReadScript(const char* script_uri,
                                 char** error,
                                 int* exit_code) {
-  Dart_KernelCompilationResult result = Dart_CompileToKernel(script_uri);
+  Dart_KernelCompilationResult result =
+      Dart_CompileToKernel(script_uri, platform_binary_filename_);
   switch (result.status) {
     case Dart_KernelCompilationStatus_Ok:
       return Dart_ReadKernelBinary(result.kernel, result.kernel_size);