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::OnCSSInsertRequest(const std::wstring& frame_xpath,
                                    const std::string& css,
                                    const std::string& id) {
  WebFrame* frame = GetChildFrame(frame_xpath);
  if (!frame)
    return;

  frame->document().insertStyleText(WebString::fromUTF8(css),
                                    WebString::fromUTF8(id));
}

void RenderView::OnCSSInsertRequest(const std::wstring& frame_xpath,
                                    const std::string& css,
                                    const std::string& id) {
  WebFrame* frame = GetChildFrame(frame_xpath);
  if (!frame)
    return;

  frame->document().insertStyleText(WebString::fromUTF8(css),
                                    WebString::fromUTF8(id));
}
