Invalidate paint of tickmarks on document change

Source/web/TextFinder.cpp

Index: Source/web/TextFinder.cpp
diff --git a/Source/web/TextFinder.cpp b/Source/web/TextFinder.cpp
index d699197d69d088b04bde8bbca0a238e657ea24b5..394d37c9a30d61f03442db3b4f2c8fb01629666b 100644
--- a/Source/web/TextFinder.cpp
+++ b/Source/web/TextFinder.cpp
@@ -151,7 +151,7 @@ bool TextFinder::find(int identifier, const WebString& searchText, const WebFind
         if (!options.findNext)
             clearFindMatchesCache();
 
-        ownerFrame().invalidateAll();

[Xianzhu, 2015/04/17 18:25:03]

We don't need to invalidate all. DocumentMarkerController will invalidate the
layout objects containing the new markers.

+        ownerFrame().frameView()->invalidatePaintOfTickmarks();

[chrishtr, 2015/04/17 23:21:42]

Why special code here just for tickmarks?

[Xianzhu, 2015/04/18 02:13:48]

DocumentMarkerController invalidates the layoutObjects that are added markers
during addTextMatchMarker().

Tickmarks are not invalidated in DocumentMarkerController because of
http://crbug.com/6819. For now invalidations of tickmarks are throttled by
TextFinder.  

         return false;
     }
 
@@ -207,7 +207,7 @@ void TextFinder::stopFindingAndClearSelection()
     clearFindMatchesCache();
 
     // Let the frame know that we don't want tickmarks or highlighting anymore.
-    ownerFrame().invalidateAll();
+    ownerFrame().frameView()->invalidatePaintOfTickmarks();
 }
 
 void TextFinder::reportFindInPageResultToAccessibility(int identifier)
@@ -411,7 +411,7 @@ void TextFinder::finishCurrentScopingEffort(int identifier)
     m_lastFindRequestCompletedWithNoMatches = !m_lastMatchCount;
 
     // This frame is done, so show any scrollbar tickmarks we haven't drawn yet.
-    ownerFrame().invalidateScrollbar();
+    ownerFrame().frameView()->invalidatePaintOfTickmarks();
 }
 
 void TextFinder::cancelPendingScopingEffort()
@@ -756,7 +756,7 @@ void TextFinder::invalidateIfNecessary()
 
     int i = m_lastMatchCount / startSlowingDownAfter;
     m_nextInvalidateAfter += i * slowdown;
-    ownerFrame().invalidateScrollbar();
+    ownerFrame().frameView()->invalidatePaintOfTickmarks();
 }
 
 void TextFinder::flushCurrentScoping()