Pass shader version to varying link check

gpu/command_buffer/service/program_manager.cc

Index: gpu/command_buffer/service/program_manager.cc
diff --git a/gpu/command_buffer/service/program_manager.cc b/gpu/command_buffer/service/program_manager.cc
index 9a15f8205150e7d8c9d6087708312ce7077aa2df..896669fca3b294e8ac32d95eecb8d25cd64234c8 100644
--- a/gpu/command_buffer/service/program_manager.cc
+++ b/gpu/command_buffer/service/program_manager.cc
@@ -1188,6 +1188,8 @@ bool Program::DetectVaryingsMismatch(std::string* conflicting_name) const {
   const VaryingMap* vertex_varyings = &(attached_shaders_[0]->varying_map());
   const VaryingMap* fragment_varyings = &(attached_shaders_[1]->varying_map());
 
+  int shader_version = attached_shaders_[0]->shader_version();
+
   for (VaryingMap::const_iterator iter = fragment_varyings->begin();
        iter != fragment_varyings->end(); ++iter) {
     const std::string& name = iter->first;
@@ -1203,7 +1205,7 @@ bool Program::DetectVaryingsMismatch(std::string* conflicting_name) const {
       continue;
     }
 
-    if (!hit->second.isSameVaryingAtLinkTime(iter->second)) {
+    if (!hit->second.isSameVaryingAtLinkTime(iter->second, shader_version)) {
       *conflicting_name = name;
       return true;
     }