Report lost context from GLES2Implementation based on share group state.

content/renderer/pepper/pepper_video_encoder_host.cc

Index: content/renderer/pepper/pepper_video_encoder_host.cc
diff --git a/content/renderer/pepper/pepper_video_encoder_host.cc b/content/renderer/pepper/pepper_video_encoder_host.cc
index 3047b38b119dd34db181a1e04174a7e35ab4cf81..ecc796330f29f91e7a9a4a3924a9ca025ef133fc 100644
--- a/content/renderer/pepper/pepper_video_encoder_host.cc
+++ b/content/renderer/pepper/pepper_video_encoder_host.cc
@@ -242,6 +242,10 @@ void PepperVideoEncoderHost::OnGpuControlLostContext() {
   NotifyPepperError(PP_ERROR_RESOURCE_FAILED);
 }
 
+void PepperVideoEncoderHost::OnGpuControlLostContextMaybeReentrant() {
+  // No internal state to update on lost context.
+}
+
 int32_t PepperVideoEncoderHost::OnHostMsgGetSupportedProfiles(
     ppapi::host::HostMessageContext* context) {
   std::vector<PP_VideoProfileDescription> pp_profiles;