Merge to XFA: Only call DefineJSObjects() once for the global V8 isolate.

fpdfsdk/include/jsapi/fxjs_v8.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 // FXJS_V8 is a layer that makes it easier to define native objects in V8, but
 // has no knowledge of PDF-specific native objects. It could in theory be used
 // to implement other sets of native objects.
 
@@ skipping 60 matching lines @@
 
 // Call before making FXJS_PrepareIsolate call.
 void FXJS_Initialize(unsigned int embedderDataSlot, v8::Isolate* pIsolate);
 void FXJS_Release();
 
 // Gets the global isolate set by FXJS_Initialize(), or makes a new one each
 // time if there is no such isolate. Returns true if a new isolate had to be
 // created.
 bool FXJS_GetIsolate(v8::Isolate** pResultIsolate);
 
+// Get the global isolate's ref count.
+size_t FXJS_GlobalIsolateRefCount();
+
 // Call before making FXJS_Define* calls. Resources allocated here are cleared
 // as part of FXJS_ReleaseRuntime().
 void FXJS_PrepareIsolate(v8::Isolate* pIsolate);
 
 // Call before making JS_Define* calls. Resources allocated here are cleared
 // as part of JS_ReleaseRuntime().
 void JS_PrepareIsolate(v8::Isolate* pIsolate);
 
 // Always returns a valid, newly-created objDefnID.
 int FXJS_DefineObj(v8::Isolate* pIsolate,
@@ skipping 126 matching lines @@
 double FXJS_ToNumber(v8::Isolate* pIsolate, v8::Local<v8::Value> pValue);
 v8::Local<v8::Object> FXJS_ToObject(v8::Isolate* pIsolate,
                                     v8::Local<v8::Value> pValue);
 CFX_WideString FXJS_ToString(v8::Isolate* pIsolate,
                              v8::Local<v8::Value> pValue);
 v8::Local<v8::Array> FXJS_ToArray(v8::Isolate* pIsolate,
                                   v8::Local<v8::Value> pValue);
 void FXJS_ValueCopy(v8::Local<v8::Value>& pTo, v8::Local<v8::Value> pFrom);
 
 #endif  // FPDFSDK_INCLUDE_JSAPI_FXJS_V8_H_