Send early ShowPress on TapDown when page isn't scrollable/pinchable.

Source/web/WebViewImpl.h

Index: Source/web/WebViewImpl.h
diff --git a/Source/web/WebViewImpl.h b/Source/web/WebViewImpl.h
index 0bad5b6b6aa5d12339f4ebc568ae13b27817c46a..78876a17d9529edc280573cf8e8acb96f6c06856 100644
--- a/Source/web/WebViewImpl.h
+++ b/Source/web/WebViewImpl.h
@@ -531,6 +531,8 @@ public:
 
     WebLayerTreeView* layerTreeView() const { return m_layerTreeView; }
 
+    bool isPinchZoomable() const;
+
 private:
     float legibleScale() const;
     void refreshPageScaleFactorAfterLayout();
@@ -613,6 +615,8 @@ private:
     void closeAndDeleteHelperPluginSoon(WebHelperPluginImpl*);
     void closePendingHelperPlugins(WebCore::Timer<WebViewImpl>*);
 
+    bool shouldGestureTapDownTriggerActive(const WebCore::PlatformGestureEvent&);

[Rick Byers, 2014/02/21 03:35:52]

Since this is no longer just about 'triggering active' (a concept WebViewImpl
doesn't even really know about), you should rename this.  Maybe something like
'shouldGestureTapDownTriggerShowPressImmediately', or less verbose
'earlyGestureShowPress'.

[Zeeshan Qureshi, 2014/02/24 03:14:26]

earlyGestureShowPress sounds good. I was using
shouldGestureTapDownTriggerShowPress earlier but switched to active. Thinking
about it, talking about ShowPress in WebView does make more sense, I'll add more
comments and update description accordingly.

+
     WebCore::InputMethodContext* inputMethodContext();
     WebPlugin* focusedPluginIfInputMethodSupported(WebCore::Frame*);
 
@@ -783,6 +787,8 @@ private:
 
     WebCore::Timer<WebViewImpl> m_helperPluginCloseTimer;
     Vector<WebHelperPluginImpl*> m_helperPluginsPendingClose;
+
+    bool m_gestureTapDownTriggeredActive;

[Rick Byers, 2014/02/21 03:35:52]

maybe m_sentEarlyShowPress?

 };
 
 // We have no ways to check if the specified WebView is an instance of