Fix unexpected erasing textQuad

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

Index: third_party/WebKit/Source/core/layout/LayoutText.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutText.cpp b/third_party/WebKit/Source/core/layout/LayoutText.cpp
index 75337eeed2189260acf05984ac6533c62046f20a..1829d1790d2a3d460fc6d2af5c04abc116393f21 100644
--- a/third_party/WebKit/Source/core/layout/LayoutText.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutText.cpp
@@ -503,7 +503,7 @@ void LayoutText::absoluteQuadsForRange(Vector<FloatQuad>& quads,
   start = std::min(std::max(caretMinOffset, start), caretMaxOffset);
   end = std::min(std::max(caretMinOffset, end), caretMaxOffset);
 
-  bool hasCheckedBoxInRange = false;
+  bool hasCheckedBoxInRange = quads.isEmpty() ? false : true;

[mstensho (USE GERRIT), 2017/04/03 11:16:35]

bool hasCheckedBoxInRange = !quads.isEmpty();

[wanchang, 2017/04/03 11:43:36]

Done.

 
   for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
     // Note: box->end() returns the index of the last character, not the index