Infrastructure for reading V8's initial snapshot from external files

content/test/content_test_launcher.cc

Index: content/test/content_test_launcher.cc
diff --git a/content/test/content_test_launcher.cc b/content/test/content_test_launcher.cc
index 6990fe901a790ba521ba20bffc10b2a7c201f6a8..1753a7c245e914ea073b941e182e63a037591ea9 100644
--- a/content/test/content_test_launcher.cc
+++ b/content/test/content_test_launcher.cc
@@ -21,6 +21,10 @@
 #include "media/base/media_switches.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+#include "gin/public/isolate_holder.h"
+#endif
+
 #if defined(OS_ANDROID)
 #include "base/message_loop/message_loop.h"
 #include "content/app/mojo/mojo_init.h"
@@ -55,6 +59,10 @@ class ContentBrowserTestSuite : public ContentTestSuiteBase {
     base::i18n::AllowMultipleInitializeCallsForTesting();
     base::i18n::InitializeICU();
 
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+    gin::IsolateHolder::LoadV8Snapshot();
+#endif
+
     // This needs to be done before base::TestSuite::Initialize() is called,
     // as it also tries to set MessagePumpForUIFactory.
     if (!base::MessageLoop::InitMessagePumpForUIFactory(