Update to Chromium revision 8cb76f56 (#307671)

- Linux/Mac: Load V8 initial snapshot from external bin files (see http://crbug.com/421063).
- Windows: 8.1 SDK is now required (issue #1470).
- Remove CefDOMDocument::GetSelectionStartNode and GetSelectionEndNode methods(see https://codereview.chromium.org/763043004).
- Rename internal namespace used in base headers to avoid linker conflicts with cef_sandbox.lib.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1956 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/chrome_browser_process_stub.h

@@ -53,7 +53,7 @@ class ChromeBrowserProcessStub : public BrowserProcess {
   void CreateDevToolsHttpProtocolHandler(
       chrome::HostDesktopType host_desktop_type,
       const std::string& ip,
-      int port) override;
+      uint16 port) override;
   unsigned int AddRefModule() override;
   unsigned int ReleaseModule() override;
   bool IsShuttingDown() override;