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/devtools_scheme_handler.cc

@@ -7,6 +7,7 @@
 #include <string>
 
 #include "libcef/browser/internal_scheme_handler.h"
+#include "libcef/browser/url_request_manager.h"
 
 #include "base/strings/string_util.h"
 #include "content/public/common/url_constants.h"
@@ -22,7 +23,8 @@ class Delegate : public InternalHandlerDelegate {
  public:
   Delegate() {}
 
-  bool OnRequest(CefRefPtr<CefRequest> request,
+  bool OnRequest(CefRefPtr<CefBrowser> browser,
+                 CefRefPtr<CefRequest> request,
                  Action* action) override {
     GURL url = GURL(request->GetURL().ToString());
     std::string path = url.path();
@@ -43,8 +45,8 @@ class Delegate : public InternalHandlerDelegate {
 
 }  // namespace
 
-void RegisterChromeDevToolsHandler() {
-  CefRegisterSchemeHandlerFactory(
+void RegisterChromeDevToolsHandler(CefURLRequestManager* request_manager) {
+  request_manager->AddFactory(
       content::kChromeDevToolsScheme,
       kChromeDevToolsHost,
       CreateInternalHandlerFactory(