Make unittests work in component build

src/utils.h

Index: src/utils.h
diff --git a/src/utils.h b/src/utils.h
index 314ea9be9ecac1cadaa312dbe6094066319ec7a4..4c6cb4e0240df3350d07b66150fd919fb8733ecb 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -922,7 +922,7 @@ class BailoutId {
   bool operator==(const BailoutId& other) const { return id_ == other.id_; }
   bool operator!=(const BailoutId& other) const { return id_ != other.id_; }
   friend size_t hash_value(BailoutId);
-  friend std::ostream& operator<<(std::ostream&, BailoutId);
+  V8_EXPORT_PRIVATE friend std::ostream& operator<<(std::ostream&, BailoutId);
 
  private:
   static const int kNoneId = -1;
@@ -964,7 +964,7 @@ class TokenDispenserForFinally {
 // I/O support.
 
 // Our version of printf().
-void PRINTF_FORMAT(1, 2) PrintF(const char* format, ...);
+V8_EXPORT_PRIVATE void PRINTF_FORMAT(1, 2) PrintF(const char* format, ...);
 void PRINTF_FORMAT(2, 3) PrintF(FILE* out, const char* format, ...);
 
 // Prepends the current process ID to the output.