Added "Compositing manager" status to about:gpu

content/browser/gpu/gpu_internals_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 "content/browser/gpu/gpu_internals_ui.h"
 
+#if defined(OS_LINUX) && defined(USE_X11)
+#include <X11/Xlib.h>
+#endif
+
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/i18n/time_formatting.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
@@ skipping 13 matching lines @@
 #include "gpu/config/gpu_feature_type.h"
 #include "gpu/config/gpu_info.h"
 #include "third_party/angle/src/common/version.h"
 
 #if defined(OS_WIN)
 #include "ui/base/win/shell.h"
 #endif
 
 #if defined(OS_LINUX) && defined(USE_X11)
 #include "ui/base/x/x11_util.h"
+#include "ui/gfx/x/x11_atom_cache.h"
 #endif
 
 namespace content {
 namespace {
 
 WebUIDataSource* CreateGpuHTMLSource() {
   WebUIDataSource* source = WebUIDataSource::Create(kChromeUIGpuHost);
 
   source->SetJsonPath("strings.js");
   source->AddResourcePath("gpu_internals.js", IDR_GPU_INTERNALS_JS);
@@ skipping 121 matching lines @@
                                              ui::GuessWindowManagerName()));
   {
     scoped_ptr<base::Environment> env(base::Environment::Create());
     std::string value;
     const char kXDGCurrentDesktop[] = "XDG_CURRENT_DESKTOP";
     if (env->GetVar(kXDGCurrentDesktop, &value))
       basic_info->Append(NewDescriptionValuePair(kXDGCurrentDesktop, value));
     const char kGDMSession[] = "GDMSESSION";
     if (env->GetVar(kGDMSession, &value))
       basic_info->Append(NewDescriptionValuePair(kGDMSession, value));
+    const char* kAtomsToCache[] = {
+        "_NET_WM_CM_S0",
+        NULL
+    };
+    ui::X11AtomCache atom_cache(gfx::GetXDisplay(), kAtomsToCache);
+    std::string compositing_manager = XGetSelectionOwner(
+        gfx::GetXDisplay(),
+        atom_cache.GetAtom("_NET_WM_CM_S0")) != None ? "Yes" : "No";
+    basic_info->Append(
+        NewDescriptionValuePair("Compositing manager", compositing_manager));
   }
 #endif
   std::string direct_rendering = gpu_info.direct_rendering ? "Yes" : "No";
   basic_info->Append(
       NewDescriptionValuePair("Direct rendering", direct_rendering));
 
   std::string reset_strategy =
       base::StringPrintf("0x%04x", gpu_info.gl_reset_notification_strategy);
   basic_info->Append(NewDescriptionValuePair(
       "Reset notification strategy", reset_strategy));
@@ skipping 214 matching lines @@
     : WebUIController(web_ui) {
   web_ui->AddMessageHandler(new GpuMessageHandler());
 
   // Set up the chrome://gpu/ source.
   BrowserContext* browser_context =
       web_ui->GetWebContents()->GetBrowserContext();
   WebUIDataSource::Add(browser_context, CreateGpuHTMLSource());
 }
 
 }  // namespace content