Clipboard Android - Store and Read Last Modified Time from Prefs

ui/base/clipboard/clipboard_android.h

Index: ui/base/clipboard/clipboard_android.h
diff --git a/ui/base/clipboard/clipboard_android.h b/ui/base/clipboard/clipboard_android.h
index 8589e9c75587b2936c5ae3c27c9b2dd40b0e7cf7..58d43c147065257af570f23203f1b42a87117f71 100644
--- a/ui/base/clipboard/clipboard_android.h
+++ b/ui/base/clipboard/clipboard_android.h
@@ -15,10 +15,21 @@
 #include "base/macros.h"
 #include "base/time/time.h"
 
+class PrefService;
+class PrefRegistrySimple;
+
 namespace ui {
 
-class ClipboardAndroid : public Clipboard {
+// Exported only so chrome/browser/android/preferences/browser_prefs_android.cc
+// can call RegisterPrefs().
+class UI_BASE_EXPORT ClipboardAndroid : public Clipboard {
  public:
+  static void RegisterPrefs(PrefRegistrySimple* registry);

[dcheng, 2017/04/22 01:43:01]

Could just export this one helper too.

[Mark P, 2017/04/24 17:33:26]

Ah, I didn't know I could export individual functions, not whole classes.

Exported this function and the one below it and ceased exporting the whole
class.

+
+  // Called during startup when local state is available to store a pointer to
+  // local_state in order to read and update prefs.
+  void SetLocalState(PrefService* local_state);
+
   // Called by Java when the Java Clipboard is notified that the clipboard has
   // changed.
   void OnPrimaryClipChanged(JNIEnv* env,