Chrome's omnibox merges the location and search fields, while also offering relevant suggestions and or early results to the user.
Searches in the omnibox that auto-complete to keywords, can be auto-completed by the user by pressing Tab. A user can combine this with automatic keyword creation: regular searches performed by the user will be presented in the omnibox, presenting the user with the option of pressing Tab again to automagically perform the desired search from the desired search engine. This is commonly known as tab to search
The Window Frame is the area behind the browser tabs, like a parent ul if the tabs were done up with li and a elements.
Tabs in Chromium ui are based around the treatment of tabs and their content as individual top-level elements rather than as children of the parent window.
Ctrl+Tab, Ctrl+Shift+Tab, Ctrl+PgUp and Ctrl+PgDn can all be used to switch back and forth between tabs.
Throbber in the favicon area of the tab to indicate that a page is loading.
A single-state throbber could make Chromium feel slow because it would hide the not-our-fault steps in the load process - it would lump dns wait, server contact wait, data transfer, and rendering into one animation blob. Server/network slowness would therefore affect perception of Chromium's overall speed.
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