Hosting the discardable memory service in the mus process

chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc

Index: chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
diff --git a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
index 981b6ef92dee134046ef0b660c62e1e329a0f472..343abc6cc6a6dc3fe7c875126014fc6f276a193b 100644
--- a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
+++ b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
@@ -10,7 +10,9 @@
 #include "components/constrained_window/constrained_window_views.h"
 
 #if defined(USE_AURA)
+#include "base/memory/discardable_memory_allocator.h"
 #include "base/run_loop.h"
+#include "components/discardable_memory/client/client_discardable_shared_memory_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/service_manager_connection.h"
 #include "services/service_manager/public/cpp/connector.h"
@@ -113,6 +115,17 @@ void ChromeBrowserMainExtraPartsViews::ServiceManagerConnectionStarted(
                                                    &server);
     input_device_client_->Connect(std::move(server));
 
+    discardable_memory::mojom::DiscardableSharedMemoryManagerPtr manager;
+
+    connection->GetConnector()->ConnectToInterface(ui::mojom::kServiceName,
+                                                   &manager);
+    discardable_shared_memory_manager_ = base::MakeUnique<
+        discardable_memory::ClientDiscardableSharedMemoryManager>(
+        std::move(manager), content::BrowserThread::GetTaskRunnerForThread(
+                                content::BrowserThread::IO));
+    base::DiscardableMemoryAllocator::SetInstance(
+        discardable_shared_memory_manager_.get());
+
     window_manager_connection_ = views::WindowManagerConnection::Create(
         connection->GetConnector(), connection->GetIdentity(),
         content::BrowserThread::GetTaskRunnerForThread(