Move hit testing of lines and floats to LayoutBlockFlow.

third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
index 97baaabca2d756ceb2d1776496e7c67f0d518d3c..b2dbff7fbf3e3a9466e0dac0c39d13d655cfdb51 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
@@ -2848,6 +2848,24 @@ LayoutUnit LayoutBlockFlow::nextFloatLogicalBottomBelowForBlock(LayoutUnit logic
     return m_floatingObjects->findNextFloatLogicalBottomBelowForBlock(logicalHeight);
 }
 
+bool LayoutBlockFlow::hitTestChildren(HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
+{
+    LayoutPoint scrolledOffset(hasOverflowClip() ? accumulatedOffset - scrolledContentOffset() : accumulatedOffset);
+    if (childrenInline()) {
+        if (m_lineBoxes.hitTest(LineLayoutBoxModel(this), result, locationInContainer, scrolledOffset, hitTestAction)) {
+            updateHitTestResult(result, flipForWritingMode(toLayoutPoint(locationInContainer.point() - accumulatedOffset)));
+            return true;
+        }
+    } else if (LayoutBlock::hitTestChildren(result, locationInContainer, accumulatedOffset, hitTestAction)) {
+        return true;
+    }
+
+    if (hitTestAction == HitTestFloat && hitTestFloats(result, locationInContainer, scrolledOffset))
+        return true;
+
+    return false;
+}
+
 bool LayoutBlockFlow::hitTestFloats(HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset)
 {
     if (!m_floatingObjects)