DevTools: handle gesture tap event while in inspecting element mode.

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index a4f32e2453b4d6359cdf3adef905cd829d77744e..39976bdf5485d436e02522a607c575de526e17dc 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -70,6 +70,7 @@
 #include "core/page/Frame.h"
 #include "core/page/FrameTree.h"
 #include "core/page/Page.h"
+#include "core/platform/PlatformGestureEvent.h"
 #include "core/platform/PlatformMouseEvent.h"
 #include "core/platform/PlatformTouchEvent.h"
 #include "core/rendering/HitTestResult.h"
@@ -162,6 +163,11 @@ static Node* hoveredNodeForPoint(Frame* frame, const IntPoint& point, bool ignor
     return node;
 }
 
+static Node* hoveredNodeForEvent(Frame* frame, const PlatformGestureEvent& event, bool ignorePointerEventsNone)
+{
+    return hoveredNodeForPoint(frame, event.position(), ignorePointerEventsNone);
+}
+
 static Node* hoveredNodeForEvent(Frame* frame, const PlatformMouseEvent& event, bool ignorePointerEventsNone)
 {
     return hoveredNodeForPoint(frame, event.position(), ignorePointerEventsNone);
@@ -1053,6 +1059,19 @@ bool InspectorDOMAgent::handleMousePress()
     return false;
 }
 
+bool InspectorDOMAgent::handleGestureEvent(Frame* frame, const PlatformGestureEvent& event)
+{
+    if (m_searchingForNode == NotSearching || event.type() != PlatformEvent::GestureTap)
+        return false;
+    Node* node = hoveredNodeForEvent(frame, event, false);
+    if (node && m_inspectModeHighlightConfig) {
+        m_overlay->highlightNode(node, 0 /* eventTarget */, *m_inspectModeHighlightConfig);
+        inspect(node);
+        return true;
+    }
+    return false;
+}
+
 bool InspectorDOMAgent::handleTouchEvent(Frame* frame, const PlatformTouchEvent& event)
 {
     if (m_searchingForNode == NotSearching)