Add GPU memory tab to the task manager.

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 100 matching lines @@
   }
 
   // We have to update GpuFeatureType before notify all the observers.
   NotifyGpuInfoUpdate();
 }
 
 content::GPUInfo GpuDataManagerImpl::GetGPUInfo() const {
   return gpu_info_;
 }
 
+void GpuDataManagerImpl::RequestVideoMemoryUsageStatsUpdate() {
+  GpuProcessHost::SendOnIO(
+      GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
+      content::CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
+      new GpuMsg_GetVideoMemoryUsageStats());
+}
+
 void GpuDataManagerImpl::AddLogMessage(Value* msg) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   log_messages_.Append(msg);
 }
 
 GpuFeatureType GpuDataManagerImpl::GetGpuFeatureType() {
   if (software_rendering_) {
     GpuFeatureType flags;
 
     // Skia's software rendering is probably more efficient than going through
@@ skipping 157 matching lines @@
 void GpuDataManagerImpl::SetGpuFeatureType(GpuFeatureType feature_type) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   UpdateGpuFeatureType(feature_type);
   preliminary_gpu_feature_type_ = gpu_feature_type_;
 }
 
 void GpuDataManagerImpl::NotifyGpuInfoUpdate() {
   observer_list_->Notify(&GpuDataManagerObserver::OnGpuInfoUpdate);
 }
 
+void GpuDataManagerImpl::UpdateVideoMemoryUsageStats(
+    const content::GPUVideoMemoryUsageStats& video_memory_usage_stats) {
+  observer_list_->Notify(&GpuDataManagerObserver::OnVideoMemoryUsageStatsUpdate,
+                         video_memory_usage_stats);
+}
+
 void GpuDataManagerImpl::UpdateGpuFeatureType(
     GpuFeatureType embedder_feature_type) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   int flags = embedder_feature_type;
 
   // Force disable using the GPU for these features, even if they would
   // otherwise be allowed.
   if (card_blacklisted_ ||
@@ skipping 37 matching lines @@
 
 void GpuDataManagerImpl::BlacklistCard() {
   card_blacklisted_ = true;
 
   gpu_feature_type_ = content::GPU_FEATURE_TYPE_ALL;
 
   EnableSoftwareRenderingIfNecessary();
   NotifyGpuInfoUpdate();
 }