Add support for registerProtocolHandler

Extend initialization of URLRequestContextGetterQt to create a
content::ProtocolHandlerRegistry for each content::BrowserContext and add the
registry's URL request interceptor to the front of the interceptor chain.

Implement methods in WebContentsDelegateQt to add/remove protocol handlers
to/from the ProtocolHandlerRegistry.

Add permission request signal and classes for core, quick and widgets.

Add widgets autotest.

Add signal handlers to quicknanobrowser and simplebrowser.

Task-number: QTBUG-62783
Change-Id: I808e7eb9a1cb4d7216686deed4895de14fe46310
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/core/url_request_context_getter_qt.cpp b/src/core/url_request_context_getter_qt.cpp
index fd0f24735..2622cb09e 100644
--- a/src/core/url_request_context_getter_qt.cpp
+++ b/src/core/url_request_context_getter_qt.cpp
@@ -44,6 +44,7 @@
 #include "base/strings/string_util.h"
 #include "base/task_scheduler/post_task.h"
 #include "base/threading/sequenced_worker_pool.h"
+#include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
 #include "chrome/browser/net/chrome_mojo_proxy_resolver_factory.h"
 #include "content/network/proxy_service_mojo.h"
 #include "content/public/browser/browser_thread.h"
@@ -81,6 +82,7 @@
 
 #include "api/qwebengineurlschemehandler.h"
 #include "browser_context_adapter.h"
+#include "browser_context_qt.h"
 #include "custom_protocol_handler.h"
 #include "cookie_monster_delegate_qt.h"
 #include "content_client_qt.h"
@@ -111,6 +113,14 @@ URLRequestContextGetterQt::URLRequestContextGetterQt(QSharedPointer<BrowserConte
 {
     std::swap(m_protocolHandlers, *protocolHandlers);
 
+    // The ProtocolHandlerRegistry and it's JobInterceptorFactory need to be
+    // created on the UI thread:
+    ProtocolHandlerRegistry* protocolHandlerRegistry =
+        ProtocolHandlerRegistryFactory::GetForBrowserContext(browserContext->browserContext());
+    DCHECK(protocolHandlerRegistry);
+    m_protocolHandlerInterceptor =
+        protocolHandlerRegistry->CreateJobInterceptorFactory();
+
     QMutexLocker lock(&m_mutex);
     m_cookieDelegate->setClient(browserContext->cookieStore());
     setFullConfiguration(browserContext);
@@ -583,6 +593,11 @@ void URLRequestContextGetterQt::generateJobFactory()
 
     m_requestInterceptors.clear();
 
+    if (m_protocolHandlerInterceptor) {
+        m_protocolHandlerInterceptor->Chain(std::move(topJobFactory));
+        topJobFactory = std::move(m_protocolHandlerInterceptor);
+    }
+
     m_jobFactory = std::move(topJobFactory);
 
     m_urlRequestContext->set_job_factory(m_jobFactory.get());