Error response for malformed commands should be provided by DevTools backend
With current implementation RenderViewDevToolsAgentHost tries to parse each command and if it fails it will send its own error message. The CL changes that by forwarding malformed message further to backend as it would any non-handled command.
R=pfeldman
TEST=LayoutTests/inspector/report-protocol-errors.html
BUG=231934
Review URL: https://codereview.chromium.org/
14079008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@195527 0039d316-1c4b-4281-b951-d872f2087c98