Revert of Change how the quota system computes the total poolsize for temporary storage

headless/lib/browser/headless_content_browser_client.h

Index: headless/lib/browser/headless_content_browser_client.h
diff --git a/headless/lib/browser/headless_content_browser_client.h b/headless/lib/browser/headless_content_browser_client.h
index 82c5d9e7d8a7a0abe1184c17ce00fbbbb7a6cf66..511083bfd2bdec3f383ba2f776300d3b640a5c49 100644
--- a/headless/lib/browser/headless_content_browser_client.h
+++ b/headless/lib/browser/headless_content_browser_client.h
@@ -24,10 +24,6 @@ class HeadlessContentBrowserClient : public content::ContentBrowserClient {
   content::DevToolsManagerDelegate* GetDevToolsManagerDelegate() override;
   std::unique_ptr<base::Value> GetServiceManifestOverlay(
       const std::string& name) override;
-  void GetQuotaSettings(
-      content::BrowserContext* context,
-      content::StoragePartition* partition,
-      const storage::OptionalQuotaSettingsCallback& callback) override;
 
  private:
   HeadlessBrowserImpl* browser_;  // Not owned.