In the new Chrome 69 Google decided to simplify the display of URLs in the browser address bar.
Google says that changes will take place in three main phases over the 14 months from April 2018.
Gmail online service will show a message warning about the termination of support for Chrome browser older versions. Due to significant changes relating to safety you have to download the 55-th Chrome update to continue using mail services.
PDFium is a component of the Chrome web browser designed to display PDF documents. The vulnerability has been found in it, which allows to include dangerous code into a PDF file, and execute code by simply viewing a PDF.