Selection API: add removeRange().

third_party/WebKit/Source/core/editing/DOMSelection.cpp

Index: third_party/WebKit/Source/core/editing/DOMSelection.cpp
diff --git a/third_party/WebKit/Source/core/editing/DOMSelection.cpp b/third_party/WebKit/Source/core/editing/DOMSelection.cpp
index 4540f0f6369de4b28cfb82f37fc318da948c1a68..770df423472bc6e5fff13ae5489d9649fb7f89ba 100644
--- a/third_party/WebKit/Source/core/editing/DOMSelection.cpp
+++ b/third_party/WebKit/Source/core/editing/DOMSelection.cpp
@@ -581,6 +581,14 @@ void DOMSelection::clearCachedRangeIfSelectionOfDocument() {
   frame()->selection().clearDocumentCachedRange();
 }
 
+void DOMSelection::removeRange(Range* range) {
+  DCHECK(range);
+  if (!isAvailable())
+    return;
+  if (range == primaryRangeOrNull())

[yosin_UTC9, 2017/02/24 14:47:55]

nit: I prefer early-return style:

if (range != primaryRangeOrNull())
  return;
frame()->selection().clear();

[tkent, 2017/02/24 17:44:12]

I prefer early-return in general.  However, not-early-return is simpler in this
case.

+    frame()->selection().clear();
+}
+
 void DOMSelection::removeAllRanges() {
   if (!isAvailable())
     return;