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

include/base/internal/cef_bind_internal_win.h

@@ -41,7 +41,7 @@
 #if !defined(ARCH_CPU_X86_64)
 
 namespace base {
-namespace internal {
+namespace cef_internal {
 
 template <typename Functor>
 class RunnableAdapter;
@@ -382,7 +382,7 @@ class RunnableAdapter<R(__fastcall *)(A1, A2, A3, A4, A5, A6, A7)> {
   R (__fastcall *function_)(A1, A2, A3, A4, A5, A6, A7);
 };
 
-}  // namespace internal
+}  // namespace cef_internal
 }  // namespace base
 
 #endif  // !defined(ARCH_CPU_X86_64)