Add tracing for GL texture objects

gpu/command_buffer/service/memory_tracking.h

Index: gpu/command_buffer/service/memory_tracking.h
diff --git a/gpu/command_buffer/service/memory_tracking.h b/gpu/command_buffer/service/memory_tracking.h
index a7447e4e5d5dbe5ec8226fe63d68c13b64a15fef..a44a5cd722b013e6498b5f85d5aa6ed307c9d123 100644
--- a/gpu/command_buffer/service/memory_tracking.h
+++ b/gpu/command_buffer/service/memory_tracking.h
@@ -30,6 +30,13 @@ class MemoryTracker : public base::RefCounted<MemoryTracker> {
    // Ensure a certain amount of GPU memory is free. Returns true on success.
    virtual bool EnsureGPUMemoryAvailable(size_t size_needed) = 0;
 
+   // Tracing id which identifies the GPU client for whom memory is being
+   // allocated.
+   virtual uint64_t ClientTracingId() const = 0;
+
+   // Raw ID identifying the GPU client for whom memory is being allocated.
+   virtual int ClientId() const = 0;
+
  protected:
   friend class base::RefCounted<MemoryTracker>;
   MemoryTracker() {}