PPAPI: Support sending browser-hosted resources synchronously

content/renderer/pepper/v8_var_converter.cc

Index: content/renderer/pepper/v8_var_converter.cc
diff --git a/content/renderer/pepper/v8_var_converter.cc b/content/renderer/pepper/v8_var_converter.cc
index 42d744d28729db928fddb3e532b4b59e8f68c9a6..2c4945ce4498be207c4eac29d2c78a981cdfcb40 100644
--- a/content/renderer/pepper/v8_var_converter.cc
+++ b/content/renderer/pepper/v8_var_converter.cc
@@ -450,10 +450,13 @@ bool V8VarConverter::FromV8ValueSync(
     v8::Handle<v8::Context> context,
     ppapi::ScopedPPVar* result_var) {
   bool success = FromV8ValueInternal(val, context, result_var);
-  if (!success || resource_converter_->NeedsFlush()) {
+  if (!success) {
     resource_converter_->Reset();
     return false;
   }
+  if (resource_converter_->NeedsFlush()) {
+    resource_converter_->FlushSync();
+  }
   return true;
 }