Add UMA statistics to the clipboard

ui/base/clipboard/clipboard_gtk.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/base/clipboard/clipboard.h"
 
 #include <gtk/gtk.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xatom.h>
 #include <map>
@@ skipping 445 matching lines @@
     return;
   ReadCustomDataTypes(gtk_selection_data_get_data(data),
                       gtk_selection_data_get_length(data),
                       types);
   gtk_selection_data_free(data);
 }
 
 
 void Clipboard::ReadText(Clipboard::Buffer buffer, string16* result) const {
   DCHECK(CalledOnValidThread());
+  ReportAction(buffer, READ_TEXT);
   GtkClipboard* clipboard = LookupBackingClipboard(buffer);
   if (clipboard == NULL)
     return;
 
   result->clear();
   gchar* text = gtk_clipboard_wait_for_text(clipboard);
 
   if (text == NULL)
     return;
 
   // TODO(estade): do we want to handle the possible error here?
   UTF8ToUTF16(text, strlen(text), result);
   g_free(text);
 }
 
 void Clipboard::ReadAsciiText(Clipboard::Buffer buffer,
                               std::string* result) const {
   DCHECK(CalledOnValidThread());
+  ReportAction(buffer, READ_TEXT);
   GtkClipboard* clipboard = LookupBackingClipboard(buffer);
   if (clipboard == NULL)
     return;
 
   result->clear();
   gchar* text = gtk_clipboard_wait_for_text(clipboard);
 
   if (text == NULL)
     return;
 
@@ skipping 41 matching lines @@
 
   *fragment_start = 0;
   DCHECK(markup->length() <= kuint32max);
   *fragment_end = static_cast<uint32>(markup->length());
 
   gtk_selection_data_free(data);
 }
 
 void Clipboard::ReadRTF(Buffer buffer, std::string* result) const {
   DCHECK(CalledOnValidThread());
+  ReportAction(buffer, READ_TEXT);
   ReadData(GetRtfFormatType(), result);
 }
 
 SkBitmap Clipboard::ReadImage(Buffer buffer) const {
   DCHECK(CalledOnValidThread());
   ScopedGObject<GdkPixbuf>::Type pixbuf(
       gtk_clipboard_wait_for_image(clipboard_));
   if (!pixbuf.get())
     return SkBitmap();
 
@@ skipping 150 matching lines @@
       return clipboard_;
     case BUFFER_SELECTION:
       return primary_selection_;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace ui