Drop-down closes via tap/touch again.

The drop-down list closes on a GestureTapDown, and the next GestureTap
cannot open the same list. The regression was because of the following
cl: https://codereview.chromium.org/2517253002/

BUG=670185, 569092
Test=LayoutTests/fast/forms/select-popup/popup-menu-touch-operations.html

Review-Url: https://codereview.chromium.org/2558113002
Cr-Commit-Position: refs/heads/master@{#437650}

third_party/WebKit/LayoutTests/fast/forms/select-popup/popup-menu-touch-operations-expected.txt

@@ -21,6 +21,12 @@ PASS window.internals.pagePopupWindow is not null
 PASS menuElement2.value is "2"
 ==> Test popup closes on outside GestureTapDawn
 PASS window.internals.pagePopupWindow is null
+==> Test popup doesn't reopen immediately after closing
+PASS window.internals.pagePopupWindow is null
+PASS window.internals.pagePopupWindow is null
+PASS window.internals.pagePopupWindow is not null
+PASS window.internals.pagePopupWindow is null
+PASS window.internals.pagePopupWindow is null
 PASS successfullyParsed is true
 
 TEST COMPLETE

third_party/WebKit/LayoutTests/fast/forms/select-popup/popup-menu-touch-operations.html

@@ -155,13 +155,35 @@ function test3() {
     openPicker(menuElement, function () {
         eventSender.gestureTapDown(300, 300);
         shouldBeNull('window.internals.pagePopupWindow');
-        finishJSTest();
+        test4();
     }, function () {
         testFailed('picker didn\'t open')
         finishJSTest();
     });
 }
 
+function test4() {
+  debug("==> Test popup doesn't reopen immediately after closing");
+  eventSender.clearTouchPoints();
+  shouldBeNull('window.internals.pagePopupWindow');
+
+  // Open the popup with a GestureTap.
+  var position =  elementCenterPosition(menuElement);
+  eventSender.gestureTapDown(position[0], position[1]);
+  shouldBeNull('window.internals.pagePopupWindow');
+  eventSender.gestureTap(position[0], position[1]);
+  shouldNotBe('window.internals.pagePopupWindow', 'null');
+
+  // GestureTapDown on an open popup closes it.
+  eventSender.gestureTapDown(position[0], position[1]);
+  shouldBeNull('window.internals.pagePopupWindow');
+
+  // The next GestureTap on the recently closed popup shouldn't open it.
+  eventSender.gestureTap(position[0], position[1]);
+  shouldBeNull('window.internals.pagePopupWindow');
+
+  finishJSTest();
+}
 
 </script>
 </body>

third_party/WebKit/Source/web/WebViewImpl.cpp

@@ -816,13 +816,6 @@ WebInputEventResult WebViewImpl::handleGestureEvent(
 
   switch (event.type) {
     case WebInputEvent::GestureTap: {
-      // If there is a popup open, close it as the user is clicking on the page
-      // (outside of the popup). We also save it so we can prevent a tap on an
-      // element from immediately reopening the same popup.
-      RefPtr<WebPagePopupImpl> pagePopup = m_pagePopup;
-      hidePopups();
-      DCHECK(!m_pagePopup);
-
       m_client->cancelScheduledContentIntents();
       if (detectContentOnTouch(targetedEvent)) {
         eventResult = WebInputEventResult::HandledSystem;
@@ -874,13 +867,13 @@ WebInputEventResult WebViewImpl::handleGestureEvent(
 
       eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(
           targetedEvent);
-
-      if (m_pagePopup && pagePopup &&
-          m_pagePopup->hasSamePopupClient(pagePopup.get())) {
+      if (m_pagePopup && m_lastHiddenPagePopup &&
+          m_pagePopup->hasSamePopupClient(m_lastHiddenPagePopup.get())) {
         // The tap triggered a page popup that is the same as the one we just
-        // closed.  It needs to be closed.
+        // closed. It needs to be closed.
         cancelPagePopup();
       }
+      m_lastHiddenPagePopup = nullptr;
       break;
     }
     case WebInputEvent::GestureTwoFingerTap:
@@ -900,21 +893,38 @@ WebInputEventResult WebViewImpl::handleGestureEvent(
 
       break;
     }
-    case WebInputEvent::GestureShowPress:
-      m_client->cancelScheduledContentIntents();
-    case WebInputEvent::GestureTapDown:
-      // Touch pinch zoom and scroll must hide the popup. In case of a touch
-      // scroll or pinch zoom, this function is called with GestureTapDown
-      // rather than a GSB/GSU/GSE or GPB/GPU/GPE.
+    case WebInputEvent::GestureTapDown: {
+      // Touch pinch zoom and scroll on the page (outside of a popup) must hide
+      // the popup. In case of a touch scroll or pinch zoom, this function is
+      // called with GestureTapDown rather than a GSB/GSU/GSE or GPB/GPU/GPE.
+      // When we close a popup because of a GestureTapDown, we also save it so
+      // we can prevent the following GestureTap from immediately reopening the
+      // same popup.
+      m_lastHiddenPagePopup = m_pagePopup;
       hidePopups();
-    case WebInputEvent::GestureTapCancel:
+      DCHECK(!m_pagePopup);
+      eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(
+          targetedEvent);
+      break;
+    }
+    case WebInputEvent::GestureTapCancel: {
+      m_lastHiddenPagePopup = nullptr;
+      eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(
+          targetedEvent);
+      break;
+    }
+    case WebInputEvent::GestureShowPress: {
+      m_client->cancelScheduledContentIntents();
+      eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(
+          targetedEvent);
+      break;
+    }
     case WebInputEvent::GestureTapUnconfirmed: {
       eventResult = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(
           targetedEvent);
       break;
     }
-    default:
-      NOTREACHED();
+    default: { NOTREACHED(); }
   }
   m_client->didHandleGestureEvent(event, eventCancelled);
   return eventResult;

third_party/WebKit/Source/web/WebViewImpl.h

@@ -667,6 +667,11 @@ class WEB_EXPORT WebViewImpl final
   // The popup associated with an input/select element.
   RefPtr<WebPagePopupImpl> m_pagePopup;
 
+  // This stores the last hidden page popup. If a GestureTap attempts to open
+  // the popup that is closed by its previous GestureTapDown, the popup remains
+  // closed.
+  RefPtr<WebPagePopupImpl> m_lastHiddenPagePopup;
+
   Persistent<DevToolsEmulator> m_devToolsEmulator;
   std::unique_ptr<PageOverlay> m_pageColorOverlay;