Use the site engagement eviction policy for temporary storage eviction.

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
diff --git a/content/public/browser/content_browser_client.h b/content/public/browser/content_browser_client.h
index 7f1dd208493ab25fc480045c50b14561daeffb77..46582c1b5867cc6e240ea12bbfa057933ff7c5e1 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -72,6 +72,10 @@ namespace sandbox {
 class TargetPolicy;
 }
 
+namespace storage {
+class QuotaEvictionPolicy;
+}
+
 namespace ui {
 class SelectFilePolicy;
 }
@@ -572,6 +576,9 @@ class CONTENT_EXPORT ContentBrowserClient {
   // information.
   virtual LocationProvider* OverrideSystemLocationProvider();
 
+  virtual storage::QuotaEvictionPolicy* GetTemporaryStorageEvictionPolicy(
+      BrowserContext* browser_context);
+
   // Creates a new DevToolsManagerDelegate. The caller owns the returned value.
   // It's valid to return nullptr.
   virtual DevToolsManagerDelegate* GetDevToolsManagerDelegate();