DevTools: Fix empty TextPrompt with placeholder having two lines

third_party/WebKit/Source/devtools/front_end/ui/textPrompt.css

Index: third_party/WebKit/Source/devtools/front_end/ui/textPrompt.css
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/textPrompt.css b/third_party/WebKit/Source/devtools/front_end/ui/textPrompt.css
index 49d08cb8907b1408f329b9e2b4718f9b6d643ee6..76335a533ca75bea7582cb1b77e10df4ac836fb6 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/textPrompt.css
+++ b/third_party/WebKit/Source/devtools/front_end/ui/textPrompt.css
@@ -45,7 +45,7 @@
     color: rgb(128, 128, 128);
 }
 
-::content .text-prompt:empty::after {
+::content .text-prompt:not([data-placeholder]):empty::after {
     content: '\00A0';
     width: 0;
     display: block;