Add support for complete isolation of storage and permissions (cache, cookies, localStorage, access grants, etc) on a per-request-context basis (issue #1044).

- CefRequestContext instances can be configured using a new CefRequestContextSettings structure passed to CefRequestContext::CreateContext.
- Scheme registration is now per-request-context using new CefRequestContext::RegisterSchemeHandlerFactory and ClearSchemeHandlerFactories methods.
- Cookie managers are now per-request-context by default and can be retrieved using a new CefRequestContext::GetDefaultCookieManager method.
- CefURLRequest::Create now accepts an optional CefRequestContext argument for associating a URL request with a context (browser process only).
- The CefRequestContextHandler associated with a CefRequestContext will not be released until all objects related to that context have been destroyed.
- When the cache path is empty an in-memory cache ("incognito mode") will be used for storage and no data will be persisted to disk.
- Add CefSettings.user_data_path which specifies the location where user data such as spell checking dictionary files will be stored on disk.
- Add asynchronous callbacks for all CefCookieManager methods.
- Add PK_LOCAL_APP_DATA and PK_USER_DATA path keys for retrieving user directories via CefGetPath.
- cefclient: Add "New Window" test that creates a new window unrelated to existing windows. When used in combination with `--request-context-per-browser` the new window will be given a new and isolated request context.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@2040 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/path_util_impl.cc

@@ -7,6 +7,7 @@
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
+#include "chrome/common/chrome_paths.h"
 
 bool CefGetPath(PathKey key, CefString& path) {
   int pref_key = base::PATH_START;
@@ -29,6 +30,14 @@ bool CefGetPath(PathKey key, CefString& path) {
     case PK_FILE_MODULE:
       pref_key = base::FILE_MODULE;
       break;
+#if defined(OS_WIN)
+    case PK_LOCAL_APP_DATA:
+      pref_key = base::DIR_LOCAL_APP_DATA;
+      break;
+#endif
+    case PK_USER_DATA:
+      pref_key = chrome::DIR_USER_DATA;
+      break;
     default:
       NOTREACHED() << "invalid argument";
       return false;