1 files changed, 33 insertions, 2 deletions
diff --git a/content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.cc b/content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.cc
index 73153bc..2d825b9 100644
--- a/content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.cc
+++ b/content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.cc
@@ -38,6 +38,7 @@ WebGraphicsContext3DCommandBufferImpl::WebGraphicsContext3DCommandBufferImpl()
       plugin_handle_(NULL),
 #endif  // defined(OS_MACOSX)
       context_lost_callback_(0),
+      context_lost_reason_(GL_NO_ERROR),
       cached_width_(0),
       cached_height_(0),
       bound_fbo_(0) {
@@ -685,7 +686,8 @@ WGC3Denum WebGraphicsContext3DCommandBufferImpl::getError() {
 }
 
 bool WebGraphicsContext3DCommandBufferImpl::isContextLost() {
-  return context_->IsCommandBufferContextLost();
+  return context_->IsCommandBufferContextLost() ||
+      context_lost_reason_ != GL_NO_ERROR;
 }
 
 DELEGATE_TO_GL_2(getFloatv, GetFloatv, WGC3Denum, WGC3Dfloat*)
@@ -1031,7 +1033,36 @@ void WebGraphicsContext3DCommandBufferImpl::setContextLostCallback(
   context_lost_callback_ = cb;
 }
 
-void WebGraphicsContext3DCommandBufferImpl::OnContextLost() {
+WGC3Denum WebGraphicsContext3DCommandBufferImpl::getGraphicsResetStatusARB() {
+  if (context_->IsCommandBufferContextLost() &&
+      context_lost_reason_ == GL_NO_ERROR) {
+    return GL_UNKNOWN_CONTEXT_RESET_ARB;
+  }
+
+  return context_lost_reason_;
+}
+
+namespace {
+
+WGC3Denum convertReason(RendererGLContext::ContextLostReason reason) {
+  switch (reason) {
+  case RendererGLContext::kGuilty:
+    return GL_GUILTY_CONTEXT_RESET_ARB;
+  case RendererGLContext::kInnocent:
+    return GL_INNOCENT_CONTEXT_RESET_ARB;
+  case RendererGLContext::kUnknown:
+    return GL_UNKNOWN_CONTEXT_RESET_ARB;
+  }
+
+  NOTREACHED();
+  return GL_UNKNOWN_CONTEXT_RESET_ARB;
+}
+
+}  // anonymous namespace
+
+void WebGraphicsContext3DCommandBufferImpl::OnContextLost(
+    RendererGLContext::ContextLostReason reason) {
+  context_lost_reason_ = convertReason(reason);
   if (context_lost_callback_) {
     context_lost_callback_->onContextLost();
   }