share all the needed linux code with OpenBSD in chrome and content

chrome/renderer/chrome_ppb_pdf_impl.cc

Index: chrome/renderer/chrome_ppb_pdf_impl.cc
diff --git a/chrome/renderer/chrome_ppb_pdf_impl.cc b/chrome/renderer/chrome_ppb_pdf_impl.cc
index 21e3a3e06263c488603fd6e7a287c2fc66515bb0..834eab6bb57d73dc77c40822867fd5747a3b84cb 100644
--- a/chrome/renderer/chrome_ppb_pdf_impl.cc
+++ b/chrome/renderer/chrome_ppb_pdf_impl.cc
@@ -43,7 +43,7 @@ using content::RenderThread;
 
 namespace chrome {
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
 class PrivateFontFile : public ppapi::Resource {
  public:
   PrivateFontFile(PP_Instance instance, int fd) : Resource(instance), fd_(fd) {
@@ -187,7 +187,7 @@ PP_Resource GetFontFileWithFallback(
     PP_Instance instance_id,
     const PP_FontDescription_Dev* description,
     PP_PrivateFontCharset charset) {
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   // Validate the instance before using it below.
   if (!HostGlobals::Get()->GetInstance(instance_id))
     return 0;
@@ -219,7 +219,7 @@ bool GetFontTableForPrivateFontFile(PP_Resource font_file,
                                     uint32_t table,
                                     void* output,
                                     uint32_t* output_length) {
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_OPENBSD)
   ppapi::Resource* resource =
       PpapiGlobals::Get()->GetResourceTracker()->GetResource(font_file);
   if (!resource)