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_dll/base/cef_lock_impl.cc

@@ -7,7 +7,7 @@
 #if defined(OS_WIN)
 
 namespace base {
-namespace internal {
+namespace cef_internal {
 
 LockImpl::LockImpl() {
   // The second parameter is the spin count, for short-held locks it avoid the
@@ -34,7 +34,7 @@ void LockImpl::Unlock() {
   ::LeaveCriticalSection(&native_handle_);
 }
 
-}  // namespace internal
+}  // namespace cef_internal
 }  // namespace base
 
 #elif defined(OS_POSIX)
@@ -45,7 +45,7 @@ void LockImpl::Unlock() {
 #include "include/base/cef_logging.h"
 
 namespace base {
-namespace internal {
+namespace cef_internal {
 
 LockImpl::LockImpl() {
 #ifndef NDEBUG
@@ -86,7 +86,7 @@ void LockImpl::Unlock() {
   DCHECK_EQ(rv, 0) << ". " << strerror(rv);
 }
 
-}  // namespace internal
+}  // namespace cef_internal
 }  // namespace base
 
 #endif  // defined(OS_POSIX)