DevTools: Sourcemap failure shouldn't open console drawer.

third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js

Index: third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js b/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
index bb9f0569a5f93fed8c9873d1a8bd3cfbd131bade..94db41060ed8557660e384031c1394840f9207ea 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
@@ -215,7 +215,7 @@ WebInspector.TextSourceMap.load = function(sourceMapURL, compiledURL)
             callback(new WebInspector.TextSourceMap(compiledURL, baseURL, payload));
         } catch (e) {
             console.error(e);
-            WebInspector.console.error("Failed to parse SourceMap: " + sourceMapURL);
+            WebInspector.console.warn("DevTools failed to parse SourceMap: " + sourceMapURL);
             callback(null);
         }
     }