Add calls to inform gpu of browser window count

content/browser/gpu/gpu_data_manager_impl.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_data_manager_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 58 matching lines @@
 }
 
 GpuDataManagerImpl::GpuDataManagerImpl()
     : complete_gpu_info_already_requested_(false),
       gpu_feature_type_(content::GPU_FEATURE_TYPE_UNKNOWN),
       preliminary_gpu_feature_type_(content::GPU_FEATURE_TYPE_UNKNOWN),
       gpu_switching_(content::GPU_SWITCHING_OPTION_AUTOMATIC),
       observer_list_(new GpuDataManagerObserverList),
       software_rendering_(false),
       card_blacklisted_(false),
-      update_histograms_(true) {
+      update_histograms_(true),
+      window_count_(0) {
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kDisableAcceleratedCompositing)) {
     command_line->AppendSwitch(switches::kDisableAccelerated2dCanvas);
     command_line->AppendSwitch(switches::kDisableAcceleratedLayers);
   }
   if (command_line->HasSwitch(switches::kDisableGpu))
     BlacklistCard();
   if (command_line->HasSwitch(switches::kGpuSwitching)) {
     std::string option_string = command_line->GetSwitchValueASCII(
         switches::kGpuSwitching);
@@ skipping 188 matching lines @@
 }
 
 void GpuDataManagerImpl::AddObserver(GpuDataManagerObserver* observer) {
   observer_list_->AddObserver(observer);
 }
 
 void GpuDataManagerImpl::RemoveObserver(GpuDataManagerObserver* observer) {
   observer_list_->RemoveObserver(observer);
 }
 
+void GpuDataManagerImpl::SetWindowCount(uint32 count) {
+  {
+    base::AutoLock auto_lock(gpu_info_lock_);
+    window_count_ = count;
+  }
+  GpuProcessHost::SendOnIO(
+      GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
+      content::CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
+      new GpuMsg_SetVideoMemoryWindowCount(count));
+}
+
+uint32 GpuDataManagerImpl::GetWindowCount() const {
+  base::AutoLock auto_lock(gpu_info_lock_);
+  return window_count_;
+}
+
 void GpuDataManagerImpl::AppendRendererCommandLine(
     CommandLine* command_line) const {
   DCHECK(command_line);
 
   uint32 flags = GetBlacklistedFeatures();
   if ((flags & content::GPU_FEATURE_TYPE_WEBGL)) {
 #if !defined(OS_ANDROID)
     if (!command_line->HasSwitch(switches::kDisableExperimentalWebGL))
       command_line->AppendSwitch(switches::kDisableExperimentalWebGL);
 #endif
@@ skipping 212 matching lines @@
 }
 
 void GpuDataManagerImpl::BlacklistCard() {
   card_blacklisted_ = true;
 
   gpu_feature_type_ = content::GPU_FEATURE_TYPE_ALL;
 
   EnableSoftwareRenderingIfNecessary();
   NotifyGpuInfoUpdate();
 }