Structural improvements for request handling (issue #1044)

- Add new CefRequestContext and CefRequestContextHandler classes.
- Add CefRequestContext argument to CefBrowserHost static factory methods.
- Move GetCookieManager from CefRequestHandler to CefRequestContextHandler.
- Use BrowserContext as the root proxy object for network requests.
- Move accessors for CefBrowserMainParts members from CefContext to CefContentBrowserClient.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1424 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/browser_message_filter.cc

@@ -12,6 +12,7 @@
 #include "libcef/browser/origin_whitelist_impl.h"
 #include "libcef/browser/thread_util.h"
 #include "libcef/common/cef_messages.h"
+#include "libcef/common/content_client.h"
 #include "libcef/common/values_impl.h"
 
 #include "base/compiler_specific.h"
@@ -61,7 +62,7 @@ void CefBrowserMessageFilter::OnGetNewRenderThreadInfo(
     CefProcessHostMsg_GetNewRenderThreadInfo_Params* params) {
   GetCrossOriginWhitelistEntries(&params->cross_origin_whitelist_entries);
 
-  CefRefPtr<CefApp> app = _Context->application();
+  CefRefPtr<CefApp> app = CefContentClient::Get()->application();
   if (app.get()) {
     CefRefPtr<CefBrowserProcessHandler> handler =
         app->GetBrowserProcessHandler();