DevTools: move DevToolsAgent/Client into content.

BUG=84078
TEST=

Review URL: http://codereview.chromium.org/7461019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@93596 0039d316-1c4b-4281-b951-d872f2087c98
void RenderView::UpdateTitle(WebFrame* frame, const string16& title) {
  if (!frame->parent()) {
    Send(new ViewHostMsg_UpdateTitle(
        routing_id_,
        page_id_,
        UTF16ToWideHack(title.length() > content::kMaxTitleChars ?
            title.substr(0, content::kMaxTitleChars) : title)));
  }
}

void RenderView::UpdateTitle(WebFrame* frame, const string16& title) {
  if (!frame->parent()) {
    Send(new ViewHostMsg_UpdateTitle(
        routing_id_,
        page_id_,
        UTF16ToWideHack(title.length() > content::kMaxTitleChars ?
            title.substr(0, content::kMaxTitleChars) : title)));
  }
}
