Add a Retained Pointer smart class.

pdfium.gyp

Index: pdfium.gyp
diff --git a/pdfium.gyp b/pdfium.gyp
index fed93b7828fbe0baa1eaca956dde8a4d00276f9e..2cb0d4dbc4052d7a06416ef0620ea005e29db0e3 100644
--- a/pdfium.gyp
+++ b/pdfium.gyp
@@ -530,25 +530,7 @@
       'target_name': 'fxcrt',
       'type': 'static_library',
       'sources': [
-        'core/include/fxcrt/fx_basic.h',
-        'core/include/fxcrt/fx_bidi.h',
-        'core/include/fxcrt/fx_coordinates.h',
-        'core/include/fxcrt/fx_ext.h',
-        'core/include/fxcrt/fx_memory.h',
-        'core/include/fxcrt/fx_safe_types.h',
-        'core/include/fxcrt/fx_stream.h',
-        'core/include/fxcrt/fx_string.h',
-        'core/include/fxcrt/fx_system.h',
-        'core/include/fxcrt/fx_ucd.h',
-        'core/include/fxcrt/fx_xml.h',
         'core/fxcrt/extension.h',
-        'core/fxcrt/fxcrt_platforms.cpp',
-        'core/fxcrt/fxcrt_platforms.h',
-        'core/fxcrt/fxcrt_posix.cpp',
-        'core/fxcrt/fxcrt_posix.h',
-        'core/fxcrt/fxcrt_stream.cpp',
-        'core/fxcrt/fxcrt_windows.cpp',
-        'core/fxcrt/fxcrt_windows.h',
         'core/fxcrt/fx_basic_array.cpp',
         'core/fxcrt/fx_basic_bstring.cpp',
         'core/fxcrt/fx_basic_buffer.cpp',
@@ -566,6 +548,25 @@
         'core/fxcrt/fx_unicode.cpp',
         'core/fxcrt/fx_xml_composer.cpp',
         'core/fxcrt/fx_xml_parser.cpp',
+        'core/fxcrt/fxcrt_platforms.cpp',
+        'core/fxcrt/fxcrt_platforms.h',
+        'core/fxcrt/fxcrt_posix.cpp',
+        'core/fxcrt/fxcrt_posix.h',
+        'core/fxcrt/fxcrt_stream.cpp',
+        'core/fxcrt/fxcrt_windows.cpp',
+        'core/fxcrt/fxcrt_windows.h',
+        'core/fxcrt/include/cfx_retain_ptr.h',
+        'core/include/fxcrt/fx_basic.h',
+        'core/include/fxcrt/fx_bidi.h',
+        'core/include/fxcrt/fx_coordinates.h',
+        'core/include/fxcrt/fx_ext.h',
+        'core/include/fxcrt/fx_memory.h',
+        'core/include/fxcrt/fx_safe_types.h',
+        'core/include/fxcrt/fx_stream.h',
+        'core/include/fxcrt/fx_string.h',
+        'core/include/fxcrt/fx_system.h',
+        'core/include/fxcrt/fx_ucd.h',
+        'core/include/fxcrt/fx_xml.h',
         'core/fxcrt/plex.h',
         'core/fxcrt/xml_int.h',
       ],
@@ -833,6 +834,7 @@
         'test_support',
       ],
       'sources': [
+        'core/fxcrt/cfx_retain_ptr_unittest.cpp',
         'core/fpdfapi/fpdf_font/fpdf_font_cid_unittest.cpp',
         'core/fpdfapi/fpdf_font/fpdf_font_unittest.cpp',
         'core/fpdfapi/fpdf_page/fpdf_page_parser_old_unittest.cpp',