Add bits to indicate which parts of GPUInfo are collected.

content/browser/gpu/gpu_data_manager_impl.h

Index: content/browser/gpu/gpu_data_manager_impl.h
diff --git a/content/browser/gpu/gpu_data_manager_impl.h b/content/browser/gpu/gpu_data_manager_impl.h
index c81216503ccd015ce7b1003cf64f57f6cc7e933e..ba7ae605c6baf9f8a8c042743b6e857d07c1023d 100644
--- a/content/browser/gpu/gpu_data_manager_impl.h
+++ b/content/browser/gpu/gpu_data_manager_impl.h
@@ -67,6 +67,7 @@ class CONTENT_EXPORT GpuDataManagerImpl
       const GetGpuProcessHandlesCallback& callback) const OVERRIDE;
   virtual bool GpuAccessAllowed(std::string* reason) const OVERRIDE;
   virtual void RequestCompleteGpuInfoIfNeeded() OVERRIDE;
+  virtual bool IsEssentialGpuInfoAvailable() const OVERRIDE;
   virtual bool IsCompleteGpuInfoAvailable() const OVERRIDE;
   virtual void RequestVideoMemoryUsageStatsUpdate() const OVERRIDE;
   virtual bool ShouldUseSwiftShader() const OVERRIDE;