Make PPAPI headers compile with C compilers (gcc on Linux & Mac and MSVS on W...

ppapi/ppapi.gyp

Index: ppapi/ppapi.gyp
===================================================================
--- ppapi/ppapi.gyp	(revision 65116)
+++ ppapi/ppapi.gyp	(working copy)
@@ -38,10 +38,12 @@
         ],
       },
       'sources': [
+        'c/pp_bool.h',
         'c/pp_completion_callback.h',
         'c/pp_errors.h',
         'c/pp_input_event.h',
         'c/pp_instance.h',
+        'c/pp_macros.h',
         'c/pp_module.h',
         'c/pp_point.h',
         'c/pp_rect.h',
@@ -101,6 +103,7 @@
         'c/dev/ppp_zoom_dev.h',
 
         # Deprecated interfaces.
+        'c/dev/deprecated_bool.h',
         'c/dev/ppb_var_deprecated.h',
         'c/dev/ppp_class_deprecated.h',
       ],
@@ -115,6 +118,7 @@
         '..',
       ],
       'sources': [
+        'cpp/common.h',
         'cpp/completion_callback.h',
         'cpp/core.cc',
         'cpp/core.h',
@@ -367,9 +371,7 @@
 #        'examples/file_chooser/file_chooser.cc',
 #      ],
 #    },
-
-#TODO(ppapi authors): Fix the C headers so that they are C compatible.
-#    {
+#    {	
 #      'target_name': 'ppapi_example_graphics_2d',
 #      'dependencies': [
 #        'ppapi_example_skeleton',
@@ -378,7 +380,6 @@
 #        'examples/2d/graphics_2d_example.c',
 #      ],
 #    },
-
 #    {
 #      'target_name': 'ppapi_example_paint_manager',
 #      'dependencies': [
@@ -419,6 +420,7 @@
         # Test cases.
         'tests/test_buffer.cc',
         'tests/test_buffer.h',
+        'tests/test_c_includes.c',
         'tests/test_char_set.cc',
         'tests/test_char_set.h',
         'tests/test_directory_reader.cc',