Add ContextProvider::InvalidateGrContext to reset GL state in GrContext

android_webview/browser/aw_render_thread_context_provider.cc

Index: android_webview/browser/aw_render_thread_context_provider.cc
diff --git a/android_webview/browser/aw_render_thread_context_provider.cc b/android_webview/browser/aw_render_thread_context_provider.cc
index ce3114829e9fb11b16d29d98b62c25fd89bde164..9b6e5d4c7b80a34fad48d6239636e23bcfaf7cd0 100644
--- a/android_webview/browser/aw_render_thread_context_provider.cc
+++ b/android_webview/browser/aw_render_thread_context_provider.cc
@@ -142,6 +142,13 @@ class GrContext* AwRenderThreadContextProvider::GrContext() {
   return gr_context_.get();
 }
 
+void AwRenderThreadContextProvider::InvalidateGrContext(uint32_t state) {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
+
+  if (gr_context_)
+    gr_context_.get()->resetContext(state);
+}
+
 void AwRenderThreadContextProvider::SetupLock() {
   context_->SetLock(&context_lock_);
 }