Load service isolate from the kernel binary.

runtime/bin/dfe.cc

Index: runtime/bin/dfe.cc
diff --git a/runtime/bin/dfe.cc b/runtime/bin/dfe.cc
index 45d81aeded9261d824c946c8f341b0da7155a238..2823c9ebc05e8ce32087383c4c6589db8fa0221c 100644
--- a/runtime/bin/dfe.cc
+++ b/runtime/bin/dfe.cc
@@ -97,6 +97,19 @@ void* DFE::ReadPlatform() {
 }
 
 
+void* DFE::ReadVMServiceIO() {
+  const uint8_t* buffer = NULL;
+  intptr_t buffer_length = -1;
+  bool result =
+      TryReadKernelFile(vmservice_io_binary_filename_, &buffer, &buffer_length);
+  if (result) {
+    kernel_vmservice_io_ = Dart_ReadKernelBinary(buffer, buffer_length);
+    return kernel_vmservice_io_;
+  }
+  return NULL;

[siva, 2017/06/13 02:12:02]

Can this be:

{
  kernel_vmservice_io_ = ReadScript(vmservice_io_binary_filename_);
  return kernel_vmservice_io_;
}

[sivachandra, 2017/06/14 19:25:57]

Will update this after https://codereview.chromium.org/2933203004/ lands.

+}
+
+
 void* DFE::ReadScript(const char* script_uri) {
   const uint8_t* buffer = NULL;
   intptr_t buffer_length = -1;