DevTools: fix wrapping in the search results panel in DevTools

This patch disables title wrapping for search results so that it
doesn't overlay with other results.

BUG=764328
TBR=dgozman

Change-Id: I1023d2888524a94b5bd0132ce5b2399dcc4403d6
Reviewed-on: https://chromium-review.googlesource.com/820617Reviewed-by: Andrey Lushnikov <lushnikov@chromium.org>
Commit-Queue: Andrey Lushnikov <lushnikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523303}

third_party/WebKit/Source/devtools/front_end/sources/fileBasedSearchResultsPane.css

@@ -35,7 +35,7 @@ li.search-result:hover {
 li.search-result .search-result-file-name {
     font-weight: bold;
     color: #222;
-    white-space: normal;
+    white-space: nowrap;
 }
 
 li.search-result .search-result-matches-count {