Blimp Settings framework on the c++ side

blimp/client/app/linux/blimp_main.cc

Index: blimp/client/app/linux/blimp_main.cc
diff --git a/blimp/client/app/linux/blimp_main.cc b/blimp/client/app/linux/blimp_main.cc
index 2f06d931953f8610e13822bcce2b2bd6a73ad227..3d9d731507fd7a868442367abd503159cb6791b3 100644
--- a/blimp/client/app/linux/blimp_main.cc
+++ b/blimp/client/app/linux/blimp_main.cc
@@ -13,16 +13,33 @@
 #include "blimp/client/app/linux/blimp_client_context_delegate_linux.h"
 #include "blimp/client/app/linux/blimp_display_manager.h"
 #include "blimp/client/app/linux/blimp_display_manager_delegate_main.h"
+#include "blimp/client/core/settings/settings_prefs.h"
 #include "blimp/client/public/blimp_client_context.h"
 #include "blimp/client/public/contents/blimp_navigation_controller.h"
 #include "blimp/client/support/compositor/compositor_dependencies_impl.h"
+#include "components/pref_registry/pref_registry_syncable.h"
+#include "components/prefs/command_line_pref_store.h"
+#include "components/prefs/in_memory_pref_store.h"
+#include "components/prefs/pref_service.h"
+#include "components/prefs/pref_service_factory.h"
 #include "ui/gfx/x/x11_connection.h"
 
 namespace {
 const char kDefaultUrl[] = "https://www.google.com";
 constexpr int kWindowWidth = 800;
 constexpr int kWindowHeight = 600;
-}
+
+class BlimpShellCommandLinePrefStore : public CommandLinePrefStore {
+ public:
+  explicit BlimpShellCommandLinePrefStore(const base::CommandLine* command_line)
+      : CommandLinePrefStore(command_line) {
+    blimp::client::BlimpClientContext::ApplyBlimpSwitches(this);
+  }
+
+ protected:
+  ~BlimpShellCommandLinePrefStore() override = default;
+};
+}  // namespace
 
 int main(int argc, const char**argv) {
   base::AtExitManager at_exit;
@@ -47,11 +64,29 @@ int main(int argc, const char**argv) {
   // destroyed before the delegate.
   std::unique_ptr<blimp::client::BlimpClientContextDelegate> context_delegate =
       base::MakeUnique<blimp::client::BlimpClientContextDelegateLinux>();
-  std::unique_ptr<blimp::client::BlimpClientContext> context =
-      base::WrapUnique<blimp::client::BlimpClientContext>(
-          blimp::client::BlimpClientContext::Create(
-              io_thread.task_runner(), io_thread.task_runner(),
-              base::WrapUnique(compositor_dependencies)));
+
+  // Create PrefRegistry and register blimp preferences with it.
+  scoped_refptr<user_prefs::PrefRegistrySyncable> pref_registry =
+      new ::user_prefs::PrefRegistrySyncable();
+  blimp::client::BlimpClientContext::RegisterPrefs(pref_registry.get());
+
+  PrefServiceFactory pref_service_factory;
+
+  // Create command line and user preference stores.
+  pref_service_factory.set_command_line_prefs(
+      make_scoped_refptr(new BlimpShellCommandLinePrefStore(
+          base::CommandLine::ForCurrentProcess())));
+  pref_service_factory.set_user_prefs(new InMemoryPrefStore());
+
+  // Create a PrefService binding the PrefRegistry to the pref stores.
+  // The PrefService owns the PrefRegistry and pref stores.
+  std::unique_ptr<PrefService> pref_service =
+      pref_service_factory.Create(pref_registry.get());
+
+  auto context = base::WrapUnique<blimp::client::BlimpClientContext>(
+      blimp::client::BlimpClientContext::Create(
+          io_thread.task_runner(), io_thread.task_runner(),
+          base::WrapUnique(compositor_dependencies), pref_service.get()));
   context->SetDelegate(context_delegate.get());
 
   context->Connect();