Reland: Make the CPDFXFA_App non-global

BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build_overrides/v8.gni")
 import("//testing/test.gni")
 import("pdfium.gni")
 
 config("pdfium_common_config") {
   cflags = []
@@ skipping 1045 matching lines @@
       "fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.h",
       "fpdfsdk/fpdfxfa/cpdfxfa_document.cpp",
       "fpdfsdk/fpdfxfa/cpdfxfa_document.h",
       "fpdfsdk/fpdfxfa/cpdfxfa_page.cpp",
       "fpdfsdk/fpdfxfa/cpdfxfa_page.h",
       "fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.cpp",
       "fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h",
     ]
     deps = [
       ":fxcrt",
+      ":fxjs",
       ":xfa",
     ]
     configs += [ ":pdfium_core_config" ]
   }
 
   static_library("xfa") {
     sources = [
       "xfa/fde/cfde_path.cpp",
       "xfa/fde/cfde_path.h",
       "xfa/fde/cfde_txtedtbuf.cpp",
@@ skipping 681 matching lines @@
 }
 
 if (pdf_is_standalone) {
   source_set("samples") {
     testonly = true
     deps = [
       "//samples",
     ]
   }
 }