Rename CFX_CountRef to CFX_SharedCopyOnWrite

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 663 matching lines @@
   if (is_clang) {
     cflags = [
       # http://code.google.com/p/pdfium/issues/detail?id=188
       "-Wno-switch",
     ]
   }
 }
 
 static_library("fxcrt") {
   sources = [
-    "core/fxcrt/cfx_count_ref.h",
     "core/fxcrt/cfx_observable.h",
     "core/fxcrt/cfx_retain_ptr.h",
+    "core/fxcrt/cfx_shared_copy_on_write.h",
     "core/fxcrt/cfx_string_c_template.h",
     "core/fxcrt/cfx_string_data_template.h",
     "core/fxcrt/cfx_string_pool_template.h",
     "core/fxcrt/cfx_weak_ptr.h",
     "core/fxcrt/extension.h",
     "core/fxcrt/fx_basic.h",
     "core/fxcrt/fx_basic_array.cpp",
     "core/fxcrt/fx_basic_bstring.cpp",
     "core/fxcrt/fx_basic_buffer.cpp",
     "core/fxcrt/fx_basic_coords.cpp",
@@ skipping 948 matching lines @@
     "core/fpdfapi/parser/cpdf_object_unittest.cpp",
     "core/fpdfapi/parser/cpdf_parser_unittest.cpp",
     "core/fpdfapi/parser/cpdf_simple_parser_unittest.cpp",
     "core/fpdfapi/parser/cpdf_syntax_parser_unittest.cpp",
     "core/fpdfapi/parser/fpdf_parser_decode_unittest.cpp",
     "core/fpdfdoc/cpdf_filespec_unittest.cpp",
     "core/fpdfdoc/cpdf_formfield_unittest.cpp",
     "core/fpdftext/fpdf_text_int_unittest.cpp",
     "core/fxcodec/codec/fx_codec_jpx_unittest.cpp",
     "core/fxcodec/jbig2/JBig2_Image_unittest.cpp",
-    "core/fxcrt/cfx_count_ref_unittest.cpp",
     "core/fxcrt/cfx_observable_unittest.cpp",
     "core/fxcrt/cfx_retain_ptr_unittest.cpp",
+    "core/fxcrt/cfx_shared_copy_on_write_unittest.cpp",
     "core/fxcrt/cfx_string_pool_template_unittest.cpp",
     "core/fxcrt/cfx_weak_ptr_unittest.cpp",
     "core/fxcrt/fx_basic_bstring_unittest.cpp",
     "core/fxcrt/fx_basic_gcc_unittest.cpp",
     "core/fxcrt/fx_basic_memmgr_unittest.cpp",
     "core/fxcrt/fx_basic_util_unittest.cpp",
     "core/fxcrt/fx_basic_wstring_unittest.cpp",
     "core/fxcrt/fx_bidi_unittest.cpp",
     "core/fxcrt/fx_extension_unittest.cpp",
     "core/fxcrt/fx_system_unittest.cpp",
@@ skipping 89 matching lines @@
 }
 
 if (pdf_is_standalone) {
   source_set("samples") {
     testonly = true
     deps = [
       "//samples",
     ]
   }
 }