Initialize V8 in PDFium from external files (in-renderer process only).

pdf/instance.cc

Index: pdf/instance.cc
diff --git a/pdf/instance.cc b/pdf/instance.cc
index 37192ba7b279f588c90fe8fdddbf04eff22cd9db..42179dbd72e60adcfa50739e78c5c12631d7af4f 100644
--- a/pdf/instance.cc
+++ b/pdf/instance.cc
@@ -46,6 +46,10 @@
 #include "base/mac/mac_util.h"
 #endif
 
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+#include "v8/include/v8.h"
+#endif
+
 namespace chrome_pdf {
 
 struct ToolbarButtonInfo {
@@ -319,6 +323,17 @@ Instance::~Instance() {
 }
 
 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA

[raymes, 2014/11/10 03:29:06]

It would be better not to use the #ifdef here. Instead you could base the
decision to use the snapshot data on the result of
pp::PDF::GetV8ExternalSnapshotData. If NULL is returned, then you can do
nothing.

[baixo1, 2014/11/10 15:59:48]

Done.

+  v8::StartupData natives;
+  v8::StartupData snapshot;
+  pp::PDF::GetV8ExternalSnapshotData(this, &natives.data, &natives.raw_size,
+                                     &snapshot.data, &snapshot.raw_size);
+  natives.compressed_size = natives.raw_size;
+  snapshot.compressed_size = snapshot.raw_size;
+  v8::V8::SetNativesDataBlob(&natives);
+  v8::V8::SetSnapshotDataBlob(&snapshot);
+#endif
+
   // For now, we hide HiDPI support behind a flag.
   if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
     hidpi_enabled_ = true;