Track memory consumption for decoder-internal resources

gpu/command_buffer/service/memory_tracking.h

 // 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 GPU_COMMAND_BUFFER_SERVICE_MEMORY_TRACKING_H_
 #define GPU_COMMAND_BUFFER_SERVICE_MEMORY_TRACKING_H_
 
 #include <string>
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
@@ skipping 37 matching lines @@
         mem_represented == last_updated_mem_represented_) {
       return;
     }
     if (memory_tracker_) {
       memory_tracker_->TrackMemoryAllocatedChange(
         last_updated_mem_represented_,
         mem_represented);
     }
     has_updated_mem_represented_ = true;
     last_updated_mem_represented_ = mem_represented;
-    TRACE_COUNTER_ID1(trace_category_,
-                      trace_name_,
-                      memory_tracker_,
-                      last_updated_mem_represented_);
+    if (trace_category_ && trace_name_ && memory_tracker_) {
+      TRACE_COUNTER_ID1(trace_category_,
+                        trace_name_,
+                        memory_tracker_,
+                        last_updated_mem_represented_);
+    }
+  }
+
+  size_t GetMemRepresented() const {
+    return last_updated_mem_represented_;
   }
 
  private:
   MemoryTracker* memory_tracker_;
   const char* trace_category_;
   const char* trace_name_;
   bool has_updated_mem_represented_;
   size_t last_updated_mem_represented_;
 
   DISALLOW_COPY_AND_ASSIGN(MemoryTypeTracker);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_MEMORY_TRACKING_H_