Bug 1546998 - Remove EventStateManager::UserInputCount; r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D29323

--HG--
extra : moz-landing-system : lando

dom/events/EventStateManager.cpp

@@ -193,7 +193,6 @@ NS_INTERFACE_MAP_END
 
 static uint32_t sESMInstanceCount = 0;
 
-uint64_t EventStateManager::sUserInputCounter = 0;
 int32_t EventStateManager::sUserInputEventDepth = 0;
 int32_t EventStateManager::sUserKeyboardEventDepth = 0;
 bool EventStateManager::sNormalLMouseEventInProcess = false;
@@ -4055,7 +4054,6 @@ bool EventStateManager::IsHandlingKeyboardInput() {
 /*static*/
 void EventStateManager::StartHandlingUserInput(EventMessage aMessage) {
   ++sUserInputEventDepth;
-  ++sUserInputCounter;
   if (sUserInputEventDepth == 1) {
     sLatestUserInputStart = sHandlingInputStart = TimeStamp::Now();
   }

dom/events/EventStateManager.h

@@ -268,13 +268,6 @@ class EventStateManager : public nsSupportsWeakReference, public nsIObserver {
   static bool IsHandlingUserInput();
   static bool IsHandlingKeyboardInput();
 
-  /**
-   * Get the number of user inputs handled since process start. This
-   * includes anything that is initiated by user, with the exception
-   * of page load events or mouse over events.
-   */
-  static uint64_t UserInputCount() { return sUserInputCounter; }
-
   /**
    * Get the timestamp at which the latest user input was handled.
    *
@@ -1256,11 +1249,6 @@ class EventStateManager : public nsSupportsWeakReference, public nsIObserver {
   // Array for accesskey support
   nsCOMArray<nsIContent> mAccessKeys;
 
-  // The number of user inputs handled since process start. This
-  // includes anything that is initiated by user, with the exception
-  // of page load events or mouse over events.
-  static uint64_t sUserInputCounter;
-
   // The current depth of user and keyboard inputs. sUserInputEventDepth
   // is the number of any user input events, page load events and mouse over
   // events.  sUserKeyboardEventDepth is the number of keyboard input events.