Update to Chromium revision b0aa1fb5 (#296183).

- Restore CefRenderHandler::OnScrollOffsetChanged.
- Add new RT_PING and RT_SERVICE_WORKER resource type values.
- The resource type for image sub-resource loads has changed from RT_IMAGE to RT_PREFETCH (this is a regression, see http://crbug.com/415253#c23).
- Add a patch to fix a crash in Scheduler::swapQueuesRunPendingTasks* (http://crbug.com/415478).
- Add documentation for cef_key_event_type_t values.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1846 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/browser_context_proxy.cc

@@ -19,7 +19,8 @@
 
 using content::BrowserThread;
 
-class CefBrowserContextProxy::CefResourceContext : public content::ResourceContext {
+class CefBrowserContextProxy::CefResourceContext :
+    public content::ResourceContext {
  public:
   CefResourceContext() : getter_(NULL) {}
   virtual ~CefResourceContext() {}
@@ -33,12 +34,6 @@ class CefBrowserContextProxy::CefResourceContext : public content::ResourceConte
     CHECK(getter_);
     return getter_->GetURLRequestContext();
   }
-  virtual bool AllowMicAccess(const GURL& origin) OVERRIDE {
-    return true;
-  }
-  virtual bool AllowCameraAccess(const GURL& origin) OVERRIDE {
-    return true;
-  }
 
   void set_url_request_context_getter(CefURLRequestContextGetterProxy* getter) {
     getter_ = getter;
@@ -138,7 +133,7 @@ content::SSLHostStateDelegate*
 net::URLRequestContextGetter* CefBrowserContextProxy::CreateRequestContext(
     content::ProtocolHandlerMap* protocol_handlers,
     content::URLRequestInterceptorScopedVector request_interceptors) {
-  DCHECK(!url_request_getter_);
+  DCHECK(!url_request_getter_.get());
   url_request_getter_ =
       new CefURLRequestContextGetterProxy(handler_,
           static_cast<CefURLRequestContextGetter*>(