Experiment for disabling accelerated video decoding.

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 b92a6f470b0b59a2cd22dc441d62d2f4d9d91551..2a2b0c155fc6f62010c080cf78a0cb707d20e632 100644
--- a/content/browser/gpu/gpu_data_manager_impl_private.h
+++ b/content/browser/gpu/gpu_data_manager_impl_private.h
@@ -89,6 +89,8 @@ class CONTENT_EXPORT GpuDataManagerImplPrivate {
   void HandleGpuSwitch();
 
   bool CanUseGpuBrowserCompositor() const;
+  bool ShouldDisableAcceleratedVideoDecode(
+      const base::CommandLine* command_line) const;
 
   void GetDisabledExtensions(std::string* disabled_extensions) const;
 
@@ -280,4 +282,3 @@ class CONTENT_EXPORT GpuDataManagerImplPrivate {
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_IMPL_PRIVATE_H_
-