Remove dependency on the DevTools agent for console logs.

third_party/WebKit/public/web/WebConsoleMessage.h

Index: third_party/WebKit/public/web/WebConsoleMessage.h
diff --git a/third_party/WebKit/public/web/WebConsoleMessage.h b/third_party/WebKit/public/web/WebConsoleMessage.h
index d0a109c348648438725fa143008e69ce0fb816cf..148a7d13824daff765181b3b9ccbbdef08060432 100644
--- a/third_party/WebKit/public/web/WebConsoleMessage.h
+++ b/third_party/WebKit/public/web/WebConsoleMessage.h
@@ -36,6 +36,20 @@
 namespace blink {
 
 struct WebConsoleMessage {
+    enum class Source {
+        XML,
+        JS,
+        Network,
+        ConsoleAPI,
+        Storage,
+        AppCache,
+        Rendering,
+        Security,
+        Other,
+        Deprecation,
+        Last = Deprecation
+    };
+
     enum Level {
         LevelDebug = 4,
         LevelLog = 1,
@@ -49,11 +63,13 @@ struct WebConsoleMessage {
     Level level;
     WebString text;
     WebString url;
+    Source source;
     unsigned lineNumber;
     unsigned columnNumber;
 
     WebConsoleMessage()
         : level(LevelLog)
+        , source(Source::Other)
         , lineNumber(0)
         , columnNumber(0)
     {
@@ -61,6 +77,7 @@ struct WebConsoleMessage {
     WebConsoleMessage(Level level, const WebString& text)
         : level(level)
         , text(text)
+        , source(Source::Other)
         , lineNumber(0)
         , columnNumber(0)
     {