Code: void ChromeExtensionWebContentsObserver::RenderViewCreated(
     content::RenderViewHost* render_view_host) {
   ReloadIfTerminated(render_view_host);
   ExtensionWebContentsObserver::RenderViewCreated(render_view_host);
 }

Vulnerability Type: Bypass 
CWE ID: CWE-264
Summary: PDFium, as used in Google Chrome before 47.0.2526.73, does not properly restrict use of chrome: URLs, which allows remote attackers to bypass intended scheme restrictions via a crafted PDF document, as demonstrated by a document with a link to a chrome://settings URL.
Commit Message: This patch implements a mechanism for more granular link URL permissions (filtering on scheme/host). This fixes the bug that allowed PDFs to have working links to any "chrome://" URLs.

BUG=528505,226927

Review URL: https://codereview.chromium.org/1362433002

Cr-Commit-Position: refs/heads/master@{#351705}