Disable zoom bubble for PDF extension.

components/ui/zoom/zoom_test_utils.h

Index: components/ui/zoom/zoom_test_utils.h
diff --git a/components/ui/zoom/zoom_test_utils.h b/components/ui/zoom/zoom_test_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..8fd85586fd816ef96af011d29b7eb4b75d0316ff
--- /dev/null
+++ b/components/ui/zoom/zoom_test_utils.h
@@ -0,0 +1,42 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_UI_ZOOM_ZOOM_TEST_UTILS_H_
+#define COMPONENTS_UI_ZOOM_ZOOM_TEST_UTILS_H_
+
+#include "base/macros.h"
+#include "components/ui/zoom/zoom_controller.h"
+#include "components/ui/zoom/zoom_observer.h"
+
+namespace content {
+class MessageLoopRunner;
+}
+
+namespace ui_zoom {
+
+bool operator==(const ZoomController::ZoomChangedEventData& lhs,
+                const ZoomController::ZoomChangedEventData& rhs);
+
+class ZoomChangedWatcher : public ui_zoom::ZoomObserver {
+ public:
+  ZoomChangedWatcher(
+      ZoomController* zoom_controller,
+      const ZoomController::ZoomChangedEventData& expected_event_data);
+  ~ZoomChangedWatcher() override;
+
+  void Wait();
+
+  void OnZoomChanged(
+      const ZoomController::ZoomChangedEventData& event_data) override;
+
+ private:
+  ZoomController* zoom_controller_;
+  ZoomController::ZoomChangedEventData expected_event_data_;
+  scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(ZoomChangedWatcher);
+};
+
+}  // namespace ui_zoom
+#endif  // COMPONENTS_UI_ZOOM_ZOOM_TEST_UTILS_H_