Enable webgl conformance tests under content/test/gpu in content_browsertests

content/test/content_browser_test_utils.cc

Index: content/test/content_browser_test_utils.cc
diff --git a/content/test/content_browser_test_utils.cc b/content/test/content_browser_test_utils.cc
index 1e92c7faf1a62b90f664bfe7f07c4de7e66a6968..cf5139051308b0b55742b67b091b765d9db3d1a0 100644
--- a/content/test/content_browser_test_utils.cc
+++ b/content/test/content_browser_test_utils.cc
@@ -8,8 +8,11 @@
 #include "base/file_path.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
+#include "content/public/browser/dom_operation_notification_details.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_source.h"
+#include "content/public/browser/notification_types.h"
+#include "content/public/browser/notification_service.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/test/browser_test_utils.h"
@@ -89,4 +92,42 @@ void ShellAddedObserver::ShellCreated(Shell* shell) {
     runner_->QuitClosure().Run();
 }
 
+DOMMessageQueue::DOMMessageQueue() : waiting_for_message_(false) {
+  registrar_.Add(this, content::NOTIFICATION_DOM_OPERATION_RESPONSE,
+                 content::NotificationService::AllSources());
+}
+
+DOMMessageQueue::~DOMMessageQueue() {}
+
+void DOMMessageQueue::Observe(int type,
+                              const content::NotificationSource& source,
+                              const content::NotificationDetails& details) {
+  content::Details<DomOperationNotificationDetails> dom_op_details(details);
+  content::Source<RenderViewHost> sender(source);
+  message_queue_.push(dom_op_details->json);
+  if (waiting_for_message_) {
+    waiting_for_message_ = false;
+    message_loop_runner_->Quit();
+  }
+}
+
+void DOMMessageQueue::ClearQueue() {
+  message_queue_ = std::queue<std::string>();
+}
+
+bool DOMMessageQueue::WaitForMessage(std::string* message) {
+  if (message_queue_.empty()) {
+    waiting_for_message_ = true;
+    // This will be quit when a new message comes in.
+    message_loop_runner_ = new content::MessageLoopRunner;
+    message_loop_runner_->Run();
+  }
+  // The queue should not be empty, unless we were quit because of a timeout.
+  if (message_queue_.empty())
+    return false;
+  if (message)
+    *message = message_queue_.front();
+  return true;
+}
+
 }  // namespace content