Add modifiable tqx parameter to CSV export module.

PiperOrigin-RevId: 858685588

Author: Profiler Team

frontend/app/components/controls/export_as_csv/export_as_csv.ts

@@ -14,10 +14,12 @@ export class ExportAsCsv {
   @Input() tool = '';
   @Input() sessionId = '';
   @Input() host = '';
+  @Input() tqx = '';
 
   dataService: DataServiceV2Interface = inject(DATA_SERVICE_INTERFACE_TOKEN);
 
   exportDataAsCSV() {
-    this.dataService.exportDataAsCSV(this.sessionId, this.tool, this.host);
+    this.dataService.exportDataAsCSV(
+        this.sessionId, this.tool, this.host, this.tqx);
   }
 }

frontend/app/services/data_service_v2/data_service_v2.ts

@@ -369,12 +369,12 @@ export class DataServiceV2 implements DataServiceV2Interface {
     window.history.replaceState({}, '', newUrl);
   }
 
-  exportDataAsCSV(sessionId: string, tool: string, host: string) {
+  exportDataAsCSV(sessionId: string, tool: string, host: string, tqx = '') {
     let params = this.getHttpParamsWithPath();
     params = params.set('run', sessionId)
                  .set('tag', tool)
                  .set('host', host)
-                 .set('tqx', 'out:csv;');
+                 .set('tqx', 'out:csv;' + tqx);
     windowOpen(
         window, this.pathPrefix + DATA_CSV_API + '?' + params.toString(),
         '_blank');

frontend/app/services/data_service_v2/data_service_v2_interface.ts

@@ -101,7 +101,12 @@ export interface DataServiceV2Interface {
   getSearchParams(): URLSearchParams;
   setSearchParams(searchParams: URLSearchParams): void;
 
-  exportDataAsCSV(sessionId: string, tool: string, host: string): void;
+  // Export tool data for the given session as a CSV.
+  // tqx: additional query parameters to pass to the server. The format should
+  // be a semicolon-separated list of key-value pairs, for example,
+  // "key1:value1;key2:value2".
+  exportDataAsCSV(sessionId: string, tool: string, host: string, tqx?: string):
+      void;
 
   getDataByModuleNameAndMemorySpace(
       tool: string,