Reduce hit test on ShowPress by moving event targeting to WebViewImpl

Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebViewImpl_h
 #define WebViewImpl_h
 
+#include "core/page/EventWithHitTestResults.h"
 #include "core/page/PagePopupDriver.h"
 #include "platform/geometry/IntPoint.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "public/platform/WebGestureCurveTarget.h"
 #include "public/platform/WebLayer.h"
 #include "public/platform/WebPoint.h"
 #include "public/platform/WebRect.h"
 #include "public/platform/WebSize.h"
 #include "public/platform/WebString.h"
@@ skipping 381 matching lines @@
         ScrollDirection*,
         ScrollGranularity*);
 
     // Called by a full frame plugin inside this view to inform it that its
     // zoom level has been updated.  The plugin should only call this function
     // if the zoom change was triggered by the browser, it's only needed in case
     // a plugin can update its own zoom, say because of its own UI.
     void fullFramePluginZoomLevelChanged(double zoomLevel);
 
     void computeScaleAndScrollForBlockRect(const WebPoint& hitPoint, const WebRect& blockRect, float padding, float defaultScaleWhenAlreadyLegible, float& scale, WebPoint& scroll);
-    Node* bestTapNode(const PlatformGestureEvent& tapEvent);
-    void enableTapHighlightAtPoint(const PlatformGestureEvent& tapEvent);
+    Node* bestTapNode(const GestureEventWithHitTestResults& targetedTapEvent);
+    void enableTapHighlightAtPoint(const GestureEventWithHitTestResults& targetedTapEvent);
     void enableTapHighlights(WillBeHeapVector<RawPtrWillBeMember<Node> >&);
     void computeScaleAndScrollForFocusedNode(Node* focusedNode, float& scale, IntPoint& scroll, bool& needAnimation);
 
     void animateDoubleTapZoom(const IntPoint&);
 
     void enableFakePageScaleAnimationForTesting(bool);
     bool fakeDoubleTapAnimationPendingForTesting() const { return m_doubleTapZoomPending; }
     IntPoint fakePageScaleAnimationTargetPositionForTesting() const { return m_fakePageScaleAnimationTargetPosition; }
     float fakePageScaleAnimationPageScaleForTesting() const { return m_fakePageScaleAnimationPageScaleFactor; }
     bool fakePageScaleAnimationUseAnchorForTesting() const { return m_fakePageScaleAnimationUseAnchor; }
@@ skipping 117 matching lines @@
 
     // PageWidgetEventHandler functions
     virtual void handleMouseLeave(LocalFrame&, const WebMouseEvent&) OVERRIDE;
     virtual void handleMouseDown(LocalFrame&, const WebMouseEvent&) OVERRIDE;
     virtual void handleMouseUp(LocalFrame&, const WebMouseEvent&) OVERRIDE;
     virtual bool handleMouseWheel(LocalFrame&, const WebMouseWheelEvent&) OVERRIDE;
     virtual bool handleGestureEvent(const WebGestureEvent&) OVERRIDE;
     virtual bool handleKeyEvent(const WebKeyboardEvent&) OVERRIDE;
     virtual bool handleCharEvent(const WebKeyboardEvent&) OVERRIDE;
 
+    bool handleGestureScrollEvent(const WebGestureEvent&);
+
     InputMethodContext* inputMethodContext();
     WebPlugin* focusedPluginIfInputMethodSupported(LocalFrame*);
 
     WebViewClient* m_client; // Can be 0 (e.g. unittests, shared workers, etc.)
     WebAutofillClient* m_autofillClient;
     WebSpellCheckClient* m_spellCheckClient;
 
     ChromeClientImpl m_chromeClientImpl;
     ContextMenuClientImpl m_contextMenuClientImpl;
     DragClientImpl m_dragClientImpl;
@@ skipping 133 matching lines @@
     bool m_userGestureObserved;
 };
 
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 } // namespace blink
 
 #endif