Blink does not respect input.selectionStart and input.selectionEnd for some cases

Source/core/html/forms/TextFieldInputType.cpp

Index: Source/core/html/forms/TextFieldInputType.cpp
diff --git a/Source/core/html/forms/TextFieldInputType.cpp b/Source/core/html/forms/TextFieldInputType.cpp
index 1b78abe81c6802df9dd34458a9f75859217cdbb0..f0e876e4ee59d98cb853699e337e555dd0dc5d5b 100644
--- a/Source/core/html/forms/TextFieldInputType.cpp
+++ b/Source/core/html/forms/TextFieldInputType.cpp
@@ -158,10 +158,16 @@ void TextFieldInputType::setValue(const String& sanitizedValue, bool valueChange
         input->updateView();
 
     unsigned max = visibleValue().length();
-    if (input->focused())
+    if (input->focused()) {
         input->setSelectionRange(max, max);
-    else
-        input->cacheSelectionInResponseToSetValue(max);
+    } else {
+        if (max <= (unsigned)input->selectionStart())

[tkent, 2014/04/29 23:55:44]

Do not use C-style cast.  Probably Making |max| int is better.

[harpreet.sk, 2014/04/30 14:36:27]

Done.

+            input->setSelectionRange(max, max);
+        else if ((max > (unsigned)input->selectionStart()) && (max < (unsigned)input->selectionEnd()))
+            input->setSelectionRange(input->selectionStart(), max);
+        else
+            input->setSelectionRange(input->selectionStart(), input->selectionEnd());
+    }
 
     if (!valueChanged)
         return;