Remove dependency on the DevTools agent for console logs.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index 9968c68515d7ec61a9d55bd57dafd61bcae1d0b7..52a1ca9d3654acf60eab278deb56771a80730220 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -746,7 +746,7 @@ void WebLocalFrameImpl::addMessageToConsole(const WebConsoleMessage& message)
 {
     DCHECK(frame());
 
-    MessageLevel webCoreMessageLevel;
+    MessageLevel webCoreMessageLevel = LogMessageLevel;
     switch (message.level) {
     case WebConsoleMessage::LevelDebug:
         webCoreMessageLevel = DebugMessageLevel;
@@ -760,9 +760,10 @@ void WebLocalFrameImpl::addMessageToConsole(const WebConsoleMessage& message)
     case WebConsoleMessage::LevelError:
         webCoreMessageLevel = ErrorMessageLevel;
         break;
-    default:
-        NOTREACHED();
-        return;
+    // Unsupported values.
+    case WebConsoleMessage::LevelInfo:
+    case WebConsoleMessage::LevelRevokedError:
+        break;
     }
 
     frame()->document()->addConsoleMessage(ConsoleMessage::create(OtherMessageSource, webCoreMessageLevel, message.text, message.url, message.lineNumber, message.columnNumber));