Add UMA statistics to the clipboard

ui/base/clipboard/clipboard_android.cc

Index: ui/base/clipboard/clipboard_android.cc
diff --git a/ui/base/clipboard/clipboard_android.cc b/ui/base/clipboard/clipboard_android.cc
index e972a3a71e3bb94af4aec824a6213bfc0e2afe9d..52748e86e9593cb39d60d4429bd50fbc06771bf9 100644
--- a/ui/base/clipboard/clipboard_android.cc
+++ b/ui/base/clipboard/clipboard_android.cc
@@ -254,6 +254,7 @@ void Clipboard::ReadText(Clipboard::Buffer buffer, string16* result) const {
 void Clipboard::ReadAsciiText(Clipboard::Buffer buffer,
                               std::string* result) const {
   DCHECK_EQ(buffer, BUFFER_STANDARD);
+  ReportAction(buffer, READ_TEXT);
   *result = g_map.Get().Get(kPlainTextFormat);
 }