Remove ContextProvider::IsContextLost.

content/browser/android/in_process/context_provider_in_process.cc

Index: content/browser/android/in_process/context_provider_in_process.cc
diff --git a/content/browser/android/in_process/context_provider_in_process.cc b/content/browser/android/in_process/context_provider_in_process.cc
index 3f0f341f299e0ba0d267ae8c91846ed127255045..ea3bb8eab12c814615b3b9aa77be2db30d53c77d 100644
--- a/content/browser/android/in_process/context_provider_in_process.cc
+++ b/content/browser/android/in_process/context_provider_in_process.cc
@@ -176,18 +176,11 @@ base::Lock* ContextProviderInProcess::GetLock() {
   return &context_lock_;
 }
 
-bool ContextProviderInProcess::IsContextLost() {
-  DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
-
-  return context3d_->isContextLost();
-}
-
 void ContextProviderInProcess::VerifyContexts() {
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
   DCHECK(context_thread_checker_.CalledOnValidThread());
 
-  if (context3d_->isContextLost())
+  if (ContextGL()->GetGraphicsResetStatusKHR() != GL_NO_ERROR)
     OnLostContext();
 }