gpu:: Remove GpuDataManagerObserver::OnVideoMemoryUsageStatsUpdate().

content/browser/gpu/gpu_data_manager_impl_private.h

Index: content/browser/gpu/gpu_data_manager_impl_private.h
diff --git a/content/browser/gpu/gpu_data_manager_impl_private.h b/content/browser/gpu/gpu_data_manager_impl_private.h
index 3d041593fe835e2872d9358bd75d97faccf1f557..89a58fad8c9c09851649c9633a02346e7b071d0c 100644
--- a/content/browser/gpu/gpu_data_manager_impl_private.h
+++ b/content/browser/gpu/gpu_data_manager_impl_private.h
@@ -50,7 +50,9 @@ class CONTENT_EXPORT GpuDataManagerImplPrivate {
   void RequestCompleteGpuInfoIfNeeded();
   bool IsEssentialGpuInfoAvailable() const;
   bool IsCompleteGpuInfoAvailable() const;
-  void RequestVideoMemoryUsageStatsUpdate() const;
+  void RequestVideoMemoryUsageStatsUpdate(
+      const base::Callback<void(const gpu::VideoMemoryUsageStats& stats)>&
+          callback) const;
   bool ShouldUseSwiftShader() const;
   void AddObserver(GpuDataManagerObserver* observer);
   void RemoveObserver(GpuDataManagerObserver* observer);
@@ -69,9 +71,6 @@ class CONTENT_EXPORT GpuDataManagerImplPrivate {
   void UpdateGpuInfo(const gpu::GPUInfo& gpu_info);
   void UpdateGpuFeatureInfo(const gpu::GpuFeatureInfo& gpu_feature_info);
 
-  void UpdateVideoMemoryUsageStats(
-      const gpu::VideoMemoryUsageStats& video_memory_usage_stats);
-
   void AppendRendererCommandLine(base::CommandLine* command_line) const;
 
   void AppendGpuCommandLine(base::CommandLine* command_line,