Delete memory manager dead code.

chrome/browser/gpu/chrome_gpu_util.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/gpu/chrome_gpu_util.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/version.h"
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #endif
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_list_observer.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 
 using content::GpuDataManager;
 
 namespace gpu_util {
 
-// The BrowserMonitor class is used to track the number of currently open
-// browser windows, so that the gpu can be notified when they are created or
-// destroyed. We only count tabbed windows for this purpose.
-
-// There's no BrowserList on Android/
-#if !defined(OS_ANDROID)
-class BrowserMonitor : public chrome::BrowserListObserver {
- public:
-  static BrowserMonitor* GetInstance() {
-    static BrowserMonitor* instance = NULL;
-    if (!instance)
-      instance = new BrowserMonitor;
-    return instance;
-  }
-
-  void Install() {
-    if (!installed_) {
-      BrowserList::AddObserver(this);
-      installed_ = true;
-    }
-  }
-
-  void Uninstall() {
-    if (installed_) {
-      BrowserList::RemoveObserver(this);
-      installed_ = false;
-    }
-  }
-
- private:
-  BrowserMonitor() : num_browsers_(0), installed_(false) {
-  }
-
-  virtual ~BrowserMonitor() {
-  }
-
-  // BrowserListObserver implementation.
-  virtual void OnBrowserAdded(Browser* browser) OVERRIDE {
-    if (browser->type() == Browser::TYPE_TABBED)
-      content::GpuDataManager::GetInstance()->SetWindowCount(++num_browsers_);
-  }
-
-  virtual void OnBrowserRemoved(Browser* browser) OVERRIDE {
-    if (browser->type() == Browser::TYPE_TABBED)
-      content::GpuDataManager::GetInstance()->SetWindowCount(--num_browsers_);
-  }
-
-  uint32 num_browsers_;
-  bool installed_;
-};
-
-void InstallBrowserMonitor() {
-  BrowserMonitor::GetInstance()->Install();
-}
-
-void UninstallBrowserMonitor() {
-  BrowserMonitor::GetInstance()->Uninstall();
-}
-
-#endif // !defined(OS_ANDROID)
-
 void DisableCompositingFieldTrial() {
   base::FieldTrial* trial =
       base::FieldTrialList::Find(content::kGpuCompositingFieldTrialName);
   if (trial)
     trial->Disable();
 }
 
 bool ShouldRunCompositingFieldTrial() {
 // Enable the field trial only on desktop OS's.
 #if !(defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX))
@@ skipping 79 matching lines @@
 
   bool force_compositing = (trial->group() == force_compositing_group);
   bool thread = (trial->group() == thread_group);
   UMA_HISTOGRAM_BOOLEAN("GPU.InForceCompositingModeFieldTrial",
                         force_compositing);
   UMA_HISTOGRAM_BOOLEAN("GPU.InCompositorThreadFieldTrial", thread);
 }
 
 }  // namespace gpu_util;