Keep "static" objects per-context rather than per isolate.

fpdfsdk/src/javascript/JS_Runtime.h

Index: fpdfsdk/src/javascript/JS_Runtime.h
diff --git a/fpdfsdk/src/javascript/JS_Runtime.h b/fpdfsdk/src/javascript/JS_Runtime.h
index d90891eff0dac93be79f30be82ee18e4d0c8d2ba..b84fff75846e74d819f249ffb68368366cfd85d8 100644
--- a/fpdfsdk/src/javascript/JS_Runtime.h
+++ b/fpdfsdk/src/javascript/JS_Runtime.h
@@ -9,6 +9,7 @@
 
 #include <set>
 #include <utility>
+#include <vector>
 
 #include "../../../core/include/fxcrt/fx_basic.h"
 #include "../../include/javascript/IJavaScript.h"
@@ -71,6 +72,7 @@ class CJS_Runtime : public IJS_Runtime {
   v8::Isolate* m_isolate;
   bool m_isolateManaged;
   v8::Global<v8::Context> m_context;
+  std::vector<v8::Global<v8::Object>*> m_StaticObjects;

[jochen (gone - plz use gerrit), 2015/11/07 16:36:27]

Global has move<> constructors, so you should be able to just put them directly
into a vector:
https://code.google.com/p/chromium/codesearch#chromium/src/v8/include/v8.h&l=827

[Tom Sepez, 2015/11/09 22:00:42]

I don't think this can work until we get c++11 std::library vector.  I tried
this and it took an execption at runtime.

   std::set<Observer*> m_observers;
 };