Start supporting chrome.resourcesPrivate API

- Register browser interface binders for PDF viewer. Copied back this
logic from the guest view implementation (from dev) to enable usage
of chrome.resourcesPrivate API in the PDF viewer of 5.15.
- Implement template replacements for extensions. Replace i18n
placeholders in the PDF viewer HTML to prevent syntax issues and
support localization.

Task-number: QTBUG-90035
Change-Id: Ief5fc536435e5c183dc987462d89311dfa429970
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

4 files changed, 70 insertions, 3 deletions

diff --git a/src/3rdparty b/src/3rdparty
-Subproject 3b1e8320c3e93dc41211ccd66cfd26fa7eec18c
+Subproject b069c30f6b9563696391be3739cc3859099f7dc
diff --git a/src/core/content_browser_client_qt.cpp b/src/core/content_browser_client_qt.cpp
index b6b46af5d..6b4b79787 100644
--- a/src/core/content_browser_client_qt.cpp
+++ b/src/core/content_browser_client_qt.cpp
@@ -167,9 +167,12 @@
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "content/public/browser/file_url_loader.h"
+#include "extensions/browser/api/mime_handler_private/mime_handler_private.h"
 #include "extensions/browser/extension_message_filter.h"
 #include "extensions/browser/extension_registry.h"
+#include "extensions/browser/extension_registry.h"
 #include "extensions/browser/guest_view/extensions_guest_view_message_filter.h"
+#include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
 #include "extensions/browser/url_loader_factory_manager.h"
 #include "extensions/common/constants.h"
 
@@ -627,6 +630,32 @@ static void BindNetworkHintsHandler(content::RenderFrameHost *frame_host,
     network_hints::SimpleNetworkHintsHandlerImpl::Create(frame_host, std::move(receiver));
 }
 
+#if BUILDFLAG(ENABLE_EXTENSIONS)
+static void BindMimeHandlerService(content::RenderFrameHost *frame_host,
+                                   mojo::PendingReceiver<extensions::mime_handler::MimeHandlerService>
+                                   receiver) {
+    auto *web_contents = content::WebContents::FromRenderFrameHost(frame_host);
+    if (!web_contents)
+        return;
+    auto *guest_view = extensions::MimeHandlerViewGuest::FromWebContents(web_contents);
+    if (!guest_view)
+        return;
+    extensions::MimeHandlerServiceImpl::Create(guest_view->GetStreamWeakPtr(), std::move(receiver));
+}
+
+static void BindBeforeUnloadControl(content::RenderFrameHost *frame_host,
+                                    mojo::PendingReceiver<extensions::mime_handler::BeforeUnloadControl>
+                                    receiver) {
+    auto *web_contents = content::WebContents::FromRenderFrameHost(frame_host);
+    if (!web_contents)
+        return;
+    auto *guest_view = extensions::MimeHandlerViewGuest::FromWebContents(web_contents);
+    if (!guest_view)
+        return;
+    guest_view->FuseBeforeUnloadControl(std::move(receiver));
+}
+#endif
+
 void ContentBrowserClientQt::RegisterBrowserInterfaceBindersForFrame(
         content::RenderFrameHost *render_frame_host,
         mojo::BinderMapWithContext<content::RenderFrameHost *> *map)
@@ -634,6 +663,22 @@ void ContentBrowserClientQt::RegisterBrowserInterfaceBindersForFrame(
     Q_UNUSED(render_frame_host);
     map->Add<blink::mojom::InsecureInputService>(base::BindRepeating(&ServiceDriver::BindInsecureInputService));
     map->Add<network_hints::mojom::NetworkHintsHandler>(base::BindRepeating(&BindNetworkHintsHandler));
+#if BUILDFLAG(ENABLE_EXTENSIONS)
+    map->Add<extensions::mime_handler::MimeHandlerService>(base::BindRepeating(&BindMimeHandlerService));
+    map->Add<extensions::mime_handler::BeforeUnloadControl>(base::BindRepeating(&BindBeforeUnloadControl));
+    const GURL &site = render_frame_host->GetSiteInstance()->GetSiteURL();
+    if (!site.SchemeIs(extensions::kExtensionScheme))
+        return;
+    content::BrowserContext *browser_context = render_frame_host->GetProcess()->GetBrowserContext();
+    auto *extension = extensions::ExtensionRegistry::Get(browser_context)
+                        ->enabled_extensions()
+                        .GetByID(site.host());
+    if (!extension)
+        return;
+    extensions::ExtensionsBrowserClient::Get()->RegisterBrowserInterfaceBindersForFrame(map,
+                                                                                        render_frame_host,
+                                                                                        extension);
+#endif
 }
 
 void ContentBrowserClientQt::ExposeInterfacesToRenderer(service_manager::BinderRegistry *registry,
diff --git a/src/core/extensions/component_extension_resource_manager_qt.cpp b/src/core/extensions/component_extension_resource_manager_qt.cpp
index 1f58de151..fb6bb5950 100644
--- a/src/core/extensions/component_extension_resource_manager_qt.cpp
+++ b/src/core/extensions/component_extension_resource_manager_qt.cpp
@@ -44,12 +44,19 @@
 
 #include "component_extension_resource_manager_qt.h"
 
+#include "base/check.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/values.h"
-
 #include "chrome/grit/component_extension_resources_map.h"
+#include "content/public/browser/browser_thread.h"
+#include "extensions/common/constants.h"
+#include "pdf/buildflags.h"
+
+#if BUILDFLAG(ENABLE_PDF)
+#include "qtwebengine/browser/pdf/pdf_extension_util.h"
+#endif  // BUILDFLAG(ENABLE_PDF)
 
 namespace extensions {
 
@@ -57,6 +64,16 @@ ComponentExtensionResourceManagerQt::ComponentExtensionResourceManagerQt()
 {
     AddComponentResourceEntries(kComponentExtensionResources,
                                 kComponentExtensionResourcesSize);
+
+#if BUILDFLAG(ENABLE_PDF)
+    base::Value dict(base::Value::Type::DICTIONARY);
+    pdf_extension_util::AddStrings(pdf_extension_util::PdfViewerContext::kPdfViewer, &dict);
+    pdf_extension_util::AddAdditionalData(&dict);
+
+    ui::TemplateReplacements pdf_viewer_replacements;
+    ui::TemplateReplacementsFromDictionaryValue(base::Value::AsDictionaryValue(dict), &pdf_viewer_replacements);
+    template_replacements_[extension_misc::kPdfExtensionId] = std::move(pdf_viewer_replacements);
+#endif
 }
 
 ComponentExtensionResourceManagerQt::~ComponentExtensionResourceManagerQt() {}
@@ -85,9 +102,11 @@ bool ComponentExtensionResourceManagerQt::IsComponentExtensionResource(const bas
     return false;
 }
 
-const ui::TemplateReplacements *ComponentExtensionResourceManagerQt::GetTemplateReplacementsForExtension(const std::string &) const
+const ui::TemplateReplacements *ComponentExtensionResourceManagerQt::GetTemplateReplacementsForExtension(const std::string &extension_id) const
 {
-    return nullptr;
+    DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+    auto it = template_replacements_.find(extension_id);
+    return it != template_replacements_.end() ? &it->second : nullptr;
 }
 
 void ComponentExtensionResourceManagerQt::AddComponentResourceEntries(const GritResourceMap *entries, size_t size)
diff --git a/src/core/extensions/component_extension_resource_manager_qt.h b/src/core/extensions/component_extension_resource_manager_qt.h
index 992e9f87c..6131e91aa 100644
--- a/src/core/extensions/component_extension_resource_manager_qt.h
+++ b/src/core/extensions/component_extension_resource_manager_qt.h
@@ -73,6 +73,9 @@ private:
     // IsComponentExtensionResource.
     std::map<base::FilePath, int> path_to_resource_id_;
 
+    // A map from an extension ID to its i18n template replacements.
+    std::map<std::string, ui::TemplateReplacements> template_replacements_;
+
     DISALLOW_COPY_AND_ASSIGN(ComponentExtensionResourceManagerQt);
 };