Disable zoom bubble for PDF extension.

components/ui/zoom/zoom_test_utils.cc

Index: components/ui/zoom/zoom_test_utils.cc
diff --git a/components/ui/zoom/zoom_test_utils.cc b/components/ui/zoom/zoom_test_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..be8df303e5f6888398acfe116b9275ce18bdba78
--- /dev/null
+++ b/components/ui/zoom/zoom_test_utils.cc
@@ -0,0 +1,43 @@
+// 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.
+
+#include "components/ui/zoom/zoom_test_utils.h"
+
+#include "content/public/test/test_utils.h"
+
+namespace ui_zoom {
+
+bool operator==(const ZoomController::ZoomChangedEventData& lhs,
+                const ZoomController::ZoomChangedEventData& rhs) {
+  return lhs.web_contents == rhs.web_contents &&
+         lhs.old_zoom_level == rhs.old_zoom_level &&
+         lhs.new_zoom_level == rhs.new_zoom_level &&
+         lhs.zoom_mode == rhs.zoom_mode &&
+         lhs.can_show_bubble == rhs.can_show_bubble;
+}
+
+ZoomChangedWatcher::ZoomChangedWatcher(
+    ZoomController* zoom_controller,
+    const ZoomController::ZoomChangedEventData& expected_event_data)
+    : zoom_controller_(zoom_controller),
+      expected_event_data_(expected_event_data),
+      message_loop_runner_(new content::MessageLoopRunner) {
+    zoom_controller_->AddObserver(this);
+  }
+
+ZoomChangedWatcher::~ZoomChangedWatcher() {
+  zoom_controller_->RemoveObserver(this);
+}
+
+void ZoomChangedWatcher::Wait() {
+  message_loop_runner_->Run();
+}
+
+void ZoomChangedWatcher::OnZoomChanged(
+    const ZoomController::ZoomChangedEventData& event_data) {
+  if (event_data == expected_event_data_)
+    message_loop_runner_->Quit();
+}
+
+}  // namespace ui_zoom