PPAPI: Make V8VarConverter longer-lived

content/renderer/pepper/host_var_tracker_unittest.cc

Index: content/renderer/pepper/host_var_tracker_unittest.cc
diff --git a/content/renderer/pepper/host_var_tracker_unittest.cc b/content/renderer/pepper/host_var_tracker_unittest.cc
index 5b4175b9d1bc818007ae73415ef475d98b1ad384..356d43d5eee265cfb37bd28e1a3186e26169e888 100644
--- a/content/renderer/pepper/host_var_tracker_unittest.cc
+++ b/content/renderer/pepper/host_var_tracker_unittest.cc
@@ -9,6 +9,7 @@
 #include "content/renderer/pepper/mock_resource.h"
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
 #include "content/renderer/pepper/pepper_try_catch.h"
+#include "content/renderer/pepper/v8_var_converter.h"
 #include "content/renderer/pepper/v8object_var.h"
 #include "content/test/ppapi_unittest.h"
 #include "gin/handle.h"
@@ -44,8 +45,9 @@ gin::WrapperInfo MyObject::kWrapperInfo = {gin::kEmbedderNativeGin};
 
 class PepperTryCatchForTest : public PepperTryCatch {
  public:
-  explicit PepperTryCatchForTest(PepperPluginInstanceImpl* instance)
-      : PepperTryCatch(instance, V8VarConverter::kAllowObjectVars),
+  PepperTryCatchForTest(PepperPluginInstanceImpl* instance,
+                        V8VarConverter* converter)
+      : PepperTryCatch(instance, converter),
         handle_scope_(instance->GetIsolate()),
         context_scope_(v8::Context::New(instance->GetIsolate())) {}
 
@@ -87,7 +89,9 @@ TEST_F(HostVarTrackerTest, DeleteObjectVarWithInstance) {
   PP_Instance pp_instance2 = instance2->pp_instance();
 
   {
-    PepperTryCatchForTest try_catch(instance2.get());
+    V8VarConverter converter(
+        instance2->pp_instance(), V8VarConverter::kAllowObjectVars);
+    PepperTryCatchForTest try_catch(instance2.get(), &converter);
     // Make an object var.
     ppapi::ScopedPPVar var = try_catch.FromV8(MyObject::Create(test_isolate));
     EXPECT_EQ(1, g_v8objects_alive);
@@ -104,7 +108,9 @@ TEST_F(HostVarTrackerTest, DeleteObjectVarWithInstance) {
 // Make sure that using the same v8 object should give the same PP_Var
 // each time.
 TEST_F(HostVarTrackerTest, ReuseVar) {
-  PepperTryCatchForTest try_catch(instance());
+  V8VarConverter converter(
+      instance()->pp_instance(), V8VarConverter::kAllowObjectVars);
+  PepperTryCatchForTest try_catch(instance(), &converter);
 
   v8::Handle<v8::Value> v8_object = MyObject::Create(v8::Isolate::GetCurrent());
   ppapi::ScopedPPVar pp_object1 = try_catch.FromV8(v8_object);