Ensure that pepper plugins honor the GPU H/W video decode blacklist and the disable-accelerated-vid…

content/browser/gpu/gpu_data_manager_impl_private.cc

Index: content/browser/gpu/gpu_data_manager_impl_private.cc
===================================================================
--- content/browser/gpu/gpu_data_manager_impl_private.cc	(revision 254462)
+++ content/browser/gpu/gpu_data_manager_impl_private.cc	(working copy)
@@ -805,6 +805,12 @@
     prefs->pepper_3d_enabled = false;
   }
 #endif
+
+  if (!IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE) &&
+      !CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableAcceleratedVideoDecode)) {
+    prefs->accelerated_video_decode_enabled = true;
+  }
 }
 
 void GpuDataManagerImplPrivate::DisableHardwareAcceleration() {