Restore the architecture check for Pepper plugins.

chrome/common/pepper_flash.cc

Index: chrome/common/pepper_flash.cc
diff --git a/chrome/common/pepper_flash.cc b/chrome/common/pepper_flash.cc
index b21d4d12197cf33c99431bba711cf2c3aac51abc..da1c00de65519dee1f77c0f9d5d7011c836b91ac 100644
--- a/chrome/common/pepper_flash.cc
+++ b/chrome/common/pepper_flash.cc
@@ -117,14 +117,10 @@ bool CheckPepperFlashManifest(const base::DictionaryValue& manifest,
   if (os != kPepperFlashOperatingSystem)
     return false;
 
-// On Win64, PepperFlash manifests have "ia32" instead of "x64" so skip the
-// architecture check. TODO(wfh): remove this when crbug.com/458894 is fixed.
-#if !defined(OS_WIN) || !defined(ARCH_CPU_X86_64)
   std::string arch;
   manifest.GetStringASCII("x-ppapi-arch", &arch);
   if (arch != kPepperFlashArch)
     return false;
-#endif
 
   *version_out = version;
   return true;