Initialize V8 in PDFium from external files (plugin process only)

pdf/out_of_process_instance.cc

Index: pdf/out_of_process_instance.cc
diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc
index bfbcb93bc1255db0cab0cf177703ca89f1ed25c9..92ef55003b3f22636b232e7a9df87466d8441a10 100644
--- a/pdf/out_of_process_instance.cc
+++ b/pdf/out_of_process_instance.cc
@@ -40,6 +40,7 @@
 #include "ppapi/cpp/var_array.h"
 #include "ppapi/cpp/var_dictionary.h"
 #include "ui/events/keycodes/keyboard_codes.h"
+#include "v8/include/v8.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
@@ -266,6 +267,17 @@ OutOfProcessInstance::~OutOfProcessInstance() {
 bool OutOfProcessInstance::Init(uint32_t argc,
                                 const char* argn[],
                                 const char* argv[]) {
+  v8::StartupData natives;
+  v8::StartupData snapshot;
+  pp::PDF::GetV8ExternalSnapshotData(this, &natives.data, &natives.raw_size,
+                                     &snapshot.data, &snapshot.raw_size);
+  if (natives.data) {
+    natives.compressed_size = natives.raw_size;
+    snapshot.compressed_size = snapshot.raw_size;
+    v8::V8::SetNativesDataBlob(&natives);
+    v8::V8::SetSnapshotDataBlob(&snapshot);
+  }
+
   // Check if the PDF is being loaded in the PDF chrome extension. We only allow
   // the plugin to be put into "full frame" mode when it is being loaded in the
   // extension because this enables some features that we don't want pages