[MacViews] Implemented text context menu

ui/gfx/render_text.cc

Index: ui/gfx/render_text.cc
diff --git a/ui/gfx/render_text.cc b/ui/gfx/render_text.cc
index 78bc651aee32c479ec8f84d793b7d520ee2cba33..d11cd0a8156cd168bc8411b628fe466b0550d1a8 100644
--- a/ui/gfx/render_text.cc
+++ b/ui/gfx/render_text.cc
@@ -1028,9 +1028,10 @@ Vector2d RenderText::GetLineOffset(size_t line_number) {
   return offset;
 }
 
-bool RenderText::GetDecoratedWordAtPoint(const Point& point,
-                                         DecoratedText* decorated_word,
-                                         Point* baseline_point) {
+bool RenderText::GetDecoratedWordAndBaselineAtPoint(
+    const Point& point,
+    DecoratedText* decorated_word,
+    Point* baseline_point) {
   // FindCursorPosition doesn't currently support multiline. See
   // http://crbug.com/650120.
   if (multiline() || obscured())
@@ -1047,15 +1048,24 @@ bool RenderText::GetDecoratedWordAtPoint(const Point& point,
   DCHECK(!word_range.is_reversed());
   DCHECK(!word_range.is_empty());
 
-  const std::vector<Rect> word_bounds = GetSubstringBounds(word_range);
-  if (word_bounds.empty() ||
-      !GetDecoratedTextForRange(word_range, decorated_word)) {
+  return GetDecoratedTextAndBaselineForRange(word_range, decorated_word,
+                                             baseline_point);
+}
+
+bool RenderText::GetDecoratedTextAndBaselineForRange(
+    const Range& range,
+    DecoratedText* decorated_text,
+    Point* baseline_point) {
+  if (range.is_empty() || !GetDecoratedTextForRange(range, decorated_text))
     return false;
-  }
 
   // Retrieve the baseline origin of the left-most glyph.
+  const std::vector<Rect> text_bounds = GetSubstringBounds(range);
+  if (text_bounds.empty())
+    return false;
+
   const auto left_rect = std::min_element(
-      word_bounds.begin(), word_bounds.end(),
+      text_bounds.begin(), text_bounds.end(),
       [](const Rect& lhs, const Rect& rhs) { return lhs.x() < rhs.x(); });
   *baseline_point = left_rect->origin() + Vector2d(0, GetDisplayTextBaseline());
   return true;