cros: Add UMA stat for graphics driver memory on tab discard

chrome/browser/ui/webui/about_ui.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 "chrome/browser/ui/webui/about_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 362 matching lines @@
     "Cached", base::IntToString(meminfo.cached / 1024)));
   output.append(AddStringRow(
     "Committed", base::IntToString(
     (meminfo.total - meminfo.free - meminfo.buffers - meminfo.cached) / 1024)));
   output.append(AddStringRow(
     "Active Anon", base::IntToString(meminfo.active_anon / 1024)));
   output.append(AddStringRow(
     "Inactive Anon", base::IntToString(meminfo.inactive_anon / 1024)));
   output.append(AddStringRow(
     "Shared", base::IntToString(meminfo.shmem / 1024)));
+  if (meminfo.gem_size != -1) {
+    output.append(AddStringRow(

[DaveMoore, 2012/12/07 18:52:48]

Is this automatically added to a total? If so there will be a problem on Intel.

[James Cook, 2012/12/07 19:41:22]

It's not adding to any other totals in the UI. There will be double-counting on
Intel in the active_anon and inactive_anon above (not sure if in one or both),
but since this is a developer page trying to approximate a dump of /proc/meminfo
I'd like to leave it as-is.

+        "Graphics", base::IntToString(meminfo.gem_size / 1024 / 1024)));
+  }
   output.append("</table>");
 
   AppendFooter(&output);
   return output;
 }
 
 #endif  // OS_CHROMEOS
 
 #if defined(USE_ASH)
 
@@ skipping 636 matching lines @@
   ThemeSource* theme = new ThemeSource(profile);
   ChromeURLDataManager::AddDataSource(profile, theme);
 #endif
 
   ChromeURLDataManager::DataSource* source =
       new AboutUIHTMLSource(name, profile);
   if (source) {
     ChromeURLDataManager::AddDataSource(profile, source);
   }
 }