Route selection bounds updates through WebLayerTreeView

Source/core/rendering/compositing/CompositedSelectionBound.h

 /*
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-#ifndef FloatPointTestHelpers_h
-#define FloatPointTestHelpers_h
+
+#ifndef CompositedSelectionBound_h
+#define CompositedSelectionBound_h
 
 #include "platform/geometry/FloatPoint.h"
+#include "platform/graphics/GraphicsLayer.h"
 
-#include <gtest/gtest.h>
+namespace blink {
 
-// Gtest will automatically pick up this function if included to print out
-// FloatPoints, rather than just spitting out their memory.
-namespace blink {
-inline void PrintTo(const FloatPoint& point, ::std::ostream* os)
-{
-    *os << "FloatPoint("
-        << std::fixed
-        << std::setprecision(4) << point.x() << "f, "
-        << std::setprecision(4) << point.y() << "f)";
-    os->unsetf(std::ios::floatfield);
-}
-}
+struct CompositedSelectionBound {
+    enum Type {
+        Caret,
+        SelectionLeft,
+        SelectionRight
+    };
 
-#endif // FloatPointTestHelpers_h
+    CompositedSelectionBound()
+        : type(Caret)
+        , layer(nullptr)
+    {
+    }
+
+    Type type;
+
+    // The structure describes the position of a caret in space of the GraphicsLayer the caret resides in.
+    // Where edgeTopInLayer is the top point of the caret, usually on the ascend line of the line box,
+    // and edgeBottomInLayer it the bottom point, on the baseline of the line box.
+    GraphicsLayer* layer;
+    FloatPoint edgeTopInLayer;
+    FloatPoint edgeBottomInLayer;
+};
+
+} // namespace blink
+
+#endif