DevTools: don't report violations in the error/warning counter.

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
index 5b63c5787633387c850ad8b89f63bfb5a0065666..78b5bc3354877ee3854c47d0e788563e298ab8e2 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
@@ -156,6 +156,8 @@ SDK.ConsoleModel = class extends SDK.SDKModel {
    * @param {!SDK.ConsoleMessage} msg
    */
   _incrementErrorWarningCount(msg) {
+    if (msg.source === SDK.ConsoleMessage.MessageSource.Violation)
+      return;
     switch (msg.level) {
       case SDK.ConsoleMessage.MessageLevel.Warning:
         this._warnings++;