Add GPU memory tab to the task manager.

content/public/common/gpu_memory_stats.h

Index: content/public/common/gpu_memory_stats.h
diff --git a/content/public/common/gpu_memory_stats.h b/content/public/common/gpu_memory_stats.h
new file mode 100644
index 0000000000000000000000000000000000000000..2e5fa6335abf8fc2370a82fb9a58ea408357b13b
--- /dev/null
+++ b/content/public/common/gpu_memory_stats.h
@@ -0,0 +1,48 @@
+// 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.
+
+#ifndef CONTENT_PUBLIC_COMMON_GPU_MEMORY_STATS_H_
+#define CONTENT_PUBLIC_COMMON_GPU_MEMORY_STATS_H_
+
+// Provides access to the GPU information for the system
+// on which chrome is currently running.
+
+#include <map>
+
+#include "base/basictypes.h"
+#include "base/process.h"
+// #include "base/time.h"

[jam, 2012/08/17 22:47:09]

get rid of all the commented out include lines 

[ccameron, 2012/08/17 22:52:36]

ACK!  Sorry!  Done.

+// #include "build/build_config.h"
+#include "content/common/content_export.h"
+// #include "content/public/common/dx_diag_node.h"
+// #include "content/public/common/gpu_performance_stats.h"
+
+

[jam, 2012/08/17 22:47:09]

nit: extra line

[ccameron, 2012/08/17 22:52:36]

Done.

+namespace content {
+
+struct CONTENT_EXPORT GPUVideoMemoryUsageStats {
+  GPUVideoMemoryUsageStats();
+  ~GPUVideoMemoryUsageStats();
+
+  struct CONTENT_EXPORT ProcessStats {
+    ProcessStats();
+    ~ProcessStats();
+
+    // The bytes of GPU resources accessible by this process
+    size_t video_memory;
+
+    // Set to true if this process' GPU resource count is inflated because
+    // it is counting other processes' resources (e.g, the GPU process has
+    // duplicate set to true because it is the aggregate of all processes)
+    bool has_duplicates;
+  };
+  typedef std::map<base::ProcessId, ProcessStats> ProcessMap;
+
+  // A map of processes to their GPU resource consumption
+  ProcessMap process_map;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_GPU_MEMORY_STATS_H_