Mark when we may have been invalidated to early out on repaintTreeAfterLayout.

Source/core/rendering/RenderTextControlSingleLine.cpp

Index: Source/core/rendering/RenderTextControlSingleLine.cpp
diff --git a/Source/core/rendering/RenderTextControlSingleLine.cpp b/Source/core/rendering/RenderTextControlSingleLine.cpp
index 00bba448973eb41d9a2b2e7e7d29e8fa2049e404..de177432e64286a4ceafe556eee7cf594d3604c7 100644
--- a/Source/core/rendering/RenderTextControlSingleLine.cpp
+++ b/Source/core/rendering/RenderTextControlSingleLine.cpp
@@ -95,6 +95,8 @@ void RenderTextControlSingleLine::layout()
 {
     SubtreeLayoutScope layoutScope(*this);
 
+    setMayNeedInvalidation(true);
+
     // FIXME: We should remove the height-related hacks in layout() and
     // styleDidChange(). We need them because
     // - Center the inner elements vertically if the input height is taller than
@@ -172,6 +174,8 @@ void RenderTextControlSingleLine::layout()
     if (RenderBox* placeholderBox = placeholderElement ? placeholderElement->renderBox() : 0) {
         LayoutSize innerTextSize;
 
+        placeholderBox->setMayNeedInvalidation(true);
+
         if (innerTextRenderer)
             innerTextSize = innerTextRenderer->size();
         placeholderBox->style()->setWidth(Length(innerTextSize.width() - placeholderBox->borderAndPaddingWidth(), Fixed));