Blink caret only if selection has focus.

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

Index: third_party/WebKit/Source/core/editing/FrameCaretTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/FrameCaretTest.cpp b/third_party/WebKit/Source/core/editing/FrameCaretTest.cpp
index e6c9b9c142893e0a4b08467ef76e0e7d7e169c07..aa1a1991f8c2491294d73384fd1fa0e5dff4056e 100644
--- a/third_party/WebKit/Source/core/editing/FrameCaretTest.cpp
+++ b/third_party/WebKit/Source/core/editing/FrameCaretTest.cpp
@@ -27,6 +27,10 @@ class FrameCaretTest : public EditingTestBase {
     LayoutTestSupport::SetIsRunningLayoutTest(was_running_layout_test_);
   }
 
+  static bool ShouldBlinkCaret(const FrameCaret& caret) {
+    return caret.ShouldBlinkCaret();
+  }
+
  private:
   const bool was_running_layout_test_;
 };
@@ -71,4 +75,23 @@ TEST_F(FrameCaretTest, BlinkAfterTyping) {
       << "The caret should blink after the typing command.";
 }
 
+TEST_F(FrameCaretTest, ShouldNotBlinkWhenSelectionLooseFocus) {
+  FrameCaret& caret = Selection().FrameCaretForTesting();
+  GetDocument().GetPage()->GetFocusController().SetActive(true);
+  GetDocument().GetPage()->GetFocusController().SetFocused(true);
+  GetDocument().body()->setInnerHTML(
+      "<div id='outer' tabindex='-1'>"
+      "<div id='input' contenteditable>foo</div>"
+      "</div>");
+  Element* input = GetDocument().QuerySelector("#input");
+  input->focus();
+  Element* outer = GetDocument().QuerySelector("#outer");
+  outer->focus();
+  GetDocument().View()->UpdateAllLifecyclePhases();
+  const SelectionInDOMTree& selection = Selection().GetSelectionInDOMTree();
+  EXPECT_EQ(selection.Base(),
+            Position(input, PositionAnchorType::kBeforeChildren));
+  EXPECT_FALSE(ShouldBlinkCaret(caret));
+}
+
 }  // namespace blink