Improve performances for the base surface rendering

- don't queue large number of tiles when scrolling/zooming
- while scrolling/zooming, schedule the tiles generation at the front of the queue

bug:4136077
Change-Id: I652464d01f3000e88e42fad1e98402436a85dce4

1 files changed, 2 insertions, 2 deletions

diff --git a/WebCore/platform/graphics/android/BaseLayerAndroid.cpp b/WebCore/platform/graphics/android/BaseLayerAndroid.cpp
index 7a08e94..1786d64 100644
--- a/WebCore/platform/graphics/android/BaseLayerAndroid.cpp
+++ b/WebCore/platform/graphics/android/BaseLayerAndroid.cpp
@@ -169,7 +169,7 @@ bool BaseLayerAndroid::drawBasePictureInGL(SkRect& viewport, float scale, double
         nextTiledPage->setScale(scale);
         m_glWebViewState->setFutureViewport(viewportTileBounds);
         m_glWebViewState->lockBaseLayerUpdate();
-        nextTiledPage->prepare(goingDown, goingLeft, viewportTileBounds);
+        nextTiledPage->prepare(goingDown, goingLeft, viewportTileBounds, true);
     }
 
     float transparency = 1;
@@ -240,7 +240,7 @@ bool BaseLayerAndroid::drawBasePictureInGL(SkRect& viewport, float scale, double
         if (!zooming)
            m_glWebViewState->unlockBaseLayerUpdate();
 
-        tiledPage->prepare(goingDown, goingLeft, preZoomBounds);
+        tiledPage->prepare(goingDown, goingLeft, preZoomBounds, true);
         tiledPage->draw(transparency, preZoomBounds);
     }