PDF Viewing Options in Google Chrome

Google Chrome comes with its very own PDF viewer. However, as of the date of this post, this viewer cannot display most forms of embedded PDF annotations:

Currently, we do not support 100% of the advanced PDF features found in Adobe Reader, such as certain types of embedded media.

For a workaround, use the URL/address bar to navigate to "about:plugins"--you can also reach this screen from Options >> Under the Hood >> Content Settings >> Plug-ins >> Disable individual plug-ins...

From here, you can disable the "Chrome PDF Viewer" plug-in. Chrome should then download PDFs instead of attempting to open them.

Optionally, if you have Adobe Acrobat Reader installed, you can enable the Adobe Acrobat plug-in which will display embedded annotations correctly.