Plumb preamble log data from the hotword extension into the speech recognizer.

chrome/browser/ui/app_list/app_list_service.h

Index: chrome/browser/ui/app_list/app_list_service.h
diff --git a/chrome/browser/ui/app_list/app_list_service.h b/chrome/browser/ui/app_list/app_list_service.h
index 2b982cbfb12a4deacfca37b5298f342ed34f77b5..278ecbb119caf92cdc57a3add169f90d48a98fd9 100644
--- a/chrome/browser/ui/app_list/app_list_service.h
+++ b/chrome/browser/ui/app_list/app_list_service.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -21,6 +22,10 @@ class CommandLine;
 class FilePath;
 }
 
+namespace content {
+struct SpeechRecognitionSessionPreamble;
+}
+
 namespace gfx {
 class ImageSkia;
 }
@@ -79,7 +84,10 @@ class AppListService {
 
   // Shows the app list, and switches to voice search. Used by always-on
   // hotwording.
-  virtual void ShowForVoiceSearch(Profile* profile) = 0;
+  virtual void ShowForVoiceSearch(
+      Profile* profile,
+      const scoped_refptr<content::SpeechRecognitionSessionPreamble>& preamble)
+      = 0;
 
   // Shows the app list, and reveals the page that contains |extension_id|. This
   // should only be called for things that show in the app list, and only when