fix --show-composited-layer-borders on Mac

gpu/command_buffer/service/context_state_impl_autogen.h

Index: gpu/command_buffer/service/context_state_impl_autogen.h
diff --git a/gpu/command_buffer/service/context_state_impl_autogen.h b/gpu/command_buffer/service/context_state_impl_autogen.h
index 9ce5953ba83205289a5de54e384470829dc8d8b8..6bc4a82eaf211b9b3b168e3fe72d05eddc38db2a 100644
--- a/gpu/command_buffer/service/context_state_impl_autogen.h
+++ b/gpu/command_buffer/service/context_state_impl_autogen.h
@@ -301,7 +301,7 @@ void ContextState::InitState(const ContextState* prev_state) const {
       }
     }
     if ((line_width != prev_state->line_width))
-      glLineWidth(line_width);
+      DoLineWidth(line_width);

[piman, 2016/11/07 22:34:40]

The approach is reasonable, but this file is autogenerated. I think you need a
modification in the code generator to produce this.

[Lof, 2016/11/08 20:11:58]

Done.

     if (feature_info_->feature_flags().chromium_path_rendering) {
       if (memcmp(prev_state->modelview_matrix, modelview_matrix,
                  sizeof(GLfloat) * 16)) {
@@ -394,7 +394,7 @@ void ContextState::InitState(const ContextState* prev_state) const {
       glHint(GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES,
              hint_fragment_shader_derivative);
     }
-    glLineWidth(line_width);
+    DoLineWidth(line_width);
     if (feature_info_->feature_flags().chromium_path_rendering) {
       glMatrixLoadfEXT(GL_PATH_MODELVIEW_CHROMIUM, modelview_matrix);
     }