Fix selectionDirection attribute value of INPUT/TEXTAREA just after creation.

selectionDirection incorrectly returned "none" in such case even on non-Mac
platforms.

BUG=640861

Review-Url: https://codereview.chromium.org/2285613002
Cr-Commit-Position: refs/heads/master@{#414678}

third_party/WebKit/LayoutTests/fast/forms/selection-direction-expected.txt

@@ -4,6 +4,7 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
 
 
 input on Mac
+PASS selectionDirection was "none" after just creating
 PASS selectionDirection was "none" after focusing and setting selection by setSelectionRange(1, 2)
 PASS selectionDirection was "none" after focusing on another element
 PASS selectionDirection was "none" after hiding the element
@@ -31,6 +32,7 @@ PASS selectionDirection was "backward" after hiding the element
 PASS selectionDirection was "none" after updating value
 
 textarea on Mac
+PASS selectionDirection was "none" after just creating
 PASS selectionDirection was "none" after focusing and setting selection by setSelectionRange(1, 2)
 PASS selectionDirection was "none" after focusing on another element
 PASS selectionDirection was "none" after hiding the element
@@ -58,6 +60,7 @@ PASS selectionDirection was "backward" after hiding the element
 PASS selectionDirection was "none" after updating value
 
 input on Win
+PASS selectionDirection was "forward" after just creating
 PASS selectionDirection was "forward" after focusing and setting selection by setSelectionRange(1, 2)
 PASS selectionDirection was "forward" after focusing on another element
 PASS selectionDirection was "forward" after hiding the element
@@ -85,6 +88,7 @@ PASS selectionDirection was "backward" after hiding the element
 PASS selectionDirection was "forward" after updating value
 
 textarea on Win
+PASS selectionDirection was "forward" after just creating
 PASS selectionDirection was "forward" after focusing and setting selection by setSelectionRange(1, 2)
 PASS selectionDirection was "forward" after focusing on another element
 PASS selectionDirection was "forward" after hiding the element
@@ -112,6 +116,7 @@ PASS selectionDirection was "backward" after hiding the element
 PASS selectionDirection was "forward" after updating value
 
 input on Unix
+PASS selectionDirection was "forward" after just creating
 PASS selectionDirection was "forward" after focusing and setting selection by setSelectionRange(1, 2)
 PASS selectionDirection was "forward" after focusing on another element
 PASS selectionDirection was "forward" after hiding the element
@@ -139,6 +144,7 @@ PASS selectionDirection was "backward" after hiding the element
 PASS selectionDirection was "forward" after updating value
 
 textarea on Unix
+PASS selectionDirection was "forward" after just creating
 PASS selectionDirection was "forward" after focusing and setting selection by setSelectionRange(1, 2)
 PASS selectionDirection was "forward" after focusing on another element
 PASS selectionDirection was "forward" after hiding the element

third_party/WebKit/LayoutTests/fast/forms/selection-direction.html

@@ -39,6 +39,9 @@ function runTest(element, platform) {
 
     var noneOnMacAndForwardOnOthers = (platform == 'Mac') ? 'none' : 'forward';
 
+    var newElement = document.createElement(element.tagName);
+    assertDirection(noneOnMacAndForwardOnOthers, newElement, 'just creating');
+
     element.setSelectionRange(1, 2);
     assertDirection(noneOnMacAndForwardOnOthers, element, 'focusing and setting selection by setSelectionRange(1, 2)');
     testCache(noneOnMacAndForwardOnOthers, element);

third_party/WebKit/Source/core/html/HTMLTextFormControlElement.cpp

@@ -62,8 +62,8 @@ HTMLTextFormControlElement::HTMLTextFormControlElement(const QualifiedName& tagN
     , m_lastChangeWasUserEdit(false)
     , m_cachedSelectionStart(0)
     , m_cachedSelectionEnd(0)
-    , m_cachedSelectionDirection(SelectionHasNoDirection)
 {
+    m_cachedSelectionDirection = doc.frame() && doc.frame()->editor().behavior().shouldConsiderSelectionAsDirectional() ? SelectionHasForwardDirection : SelectionHasNoDirection;
 }
 
 HTMLTextFormControlElement::~HTMLTextFormControlElement()