The make/sun/awt/make.depend affects the compilation process: it is used to resolve dependencies between source files. The fix 6359035 added a new header file src/windows/native/sun/windows/ComCtl32Util.h, but since the make.depend was not regenerated, modifying the header file does not automatically leads to recompiling the source files that include this header file.

See the make/sun/awt/Depend.mak for more details.