Add GL_CHROMIUM_get_error_query

gpu/command_buffer/service/query_manager.cc

Index: gpu/command_buffer/service/query_manager.cc
diff --git a/gpu/command_buffer/service/query_manager.cc b/gpu/command_buffer/service/query_manager.cc
index 14a4ab4858178d32066f96253bca458621f31813..0f94d46397aa9535a6db8ad266684ff1235ee313 100644
--- a/gpu/command_buffer/service/query_manager.cc
+++ b/gpu/command_buffer/service/query_manager.cc
@@ -7,7 +7,7 @@
 #include "base/logging.h"
 #include "base/time.h"
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
-#include "gpu/command_buffer/service/common_decoder.h"
+#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/command_buffer/service/feature_info.h"
 
 namespace gpu {
@@ -120,8 +120,52 @@ void CommandsIssuedQuery::Destroy(bool /* have_context */) {
 CommandsIssuedQuery::~CommandsIssuedQuery() {
 }
 
+class GetErrorQuery : public QueryManager::Query {
+ public:
+  GetErrorQuery(
+      QueryManager* manager, GLenum target, int32 shm_id, uint32 shm_offset);
+
+  virtual bool Begin() OVERRIDE;
+  virtual bool End(uint32 submit_count) OVERRIDE;
+  virtual bool Process() OVERRIDE;
+  virtual void Destroy(bool have_context) OVERRIDE;
+
+ protected:
+  virtual ~GetErrorQuery();
+
+ private:
+};
+
+GetErrorQuery::GetErrorQuery(
+      QueryManager* manager, GLenum target, int32 shm_id, uint32 shm_offset)
+    : Query(manager, target, shm_id, shm_offset) {
+}
+
+bool GetErrorQuery::Begin() {
+  return true;
+}
+
+bool GetErrorQuery::End(uint32 submit_count) {
+  MarkAsPending(submit_count);
+  return MarkAsCompleted(manager()->decoder()->GetGLError());
+}
+
+bool GetErrorQuery::Process() {
+  NOTREACHED();
+  return true;
+}
+
+void GetErrorQuery::Destroy(bool /* have_context */) {
+  if (!IsDeleted()) {
+    MarkAsDeleted();
+  }
+}
+
+GetErrorQuery::~GetErrorQuery() {
+}
+
 QueryManager::QueryManager(
-    CommonDecoder* decoder,
+    GLES2Decoder* decoder,
     FeatureInfo* feature_info)
     : decoder_(decoder),
       use_arb_occlusion_query2_for_occlusion_query_boolean_(
@@ -159,6 +203,9 @@ QueryManager::Query* QueryManager::CreateQuery(
     case GL_COMMANDS_ISSUED_CHROMIUM:
       query = new CommandsIssuedQuery(this, target, shm_id, shm_offset);
       break;
+    case GL_GET_ERROR_QUERY_CHROMIUM:
+      query = new GetErrorQuery(this, target, shm_id, shm_offset);
+      break;
     default: {
       GLuint service_id = 0;
       glGenQueriesARB(1, &service_id);
@@ -253,7 +300,7 @@ QueryManager::Query::~Query() {
 bool QueryManager::Query::MarkAsCompleted(GLuint result) {
   DCHECK(pending_);
   QuerySync* sync = manager_->decoder_->GetSharedMemoryAs<QuerySync*>(
-          shm_id_, shm_offset_, sizeof(*sync));
+      shm_id_, shm_offset_, sizeof(*sync));
   if (!sync) {
     return false;
   }