Don't count browser shortcut events as being user gestures.

third_party/WebKit/Source/core/input/KeyboardEventManager.cpp

Index: third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp b/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
index 0c15738f439693e596f1bc2dec41a3a572ae27e3..6ce5ab71a9b1222a6ee9b6f724328d31017cbc45 100644
--- a/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
@@ -191,12 +191,14 @@ WebInputEventResult KeyboardEventManager::KeyEvent(
 
   // To be meaningful enough to indicate user intention, a keyboard event needs
   // - not to be a modifier event
+  // - not to be a browser shortcut
   // https://crbug.com/709765
   bool is_modifier =
       Platform::Current()->IsDomKeyForModifier(initial_key_event.dom_key);
+  bool is_browser_shortcut = initial_key_event.is_browser_shortcut;
 
   std::unique_ptr<UserGestureIndicator> gesture_indicator;
-  if (!is_modifier) {
+  if (!is_modifier && !is_browser_shortcut) {
     gesture_indicator.reset(new UserGestureIndicator(
         UserGestureToken::Create(frame_->GetDocument())));
   }