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
DevToolsClient::DevToolsClient(RenderView* render_view)
    : RenderViewObserver(render_view) {
  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
  web_tools_frontend_.reset(
      WebDevToolsFrontend::create(
          render_view->webview(),
          this,
          ASCIIToUTF16(command_line.GetSwitchValueASCII(switches::kLang))));
}

DevToolsClient::DevToolsClient(RenderView* render_view)
    : RenderViewObserver(render_view) {
  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
  web_tools_frontend_.reset(
      WebDevToolsFrontend::create(
          render_view->webview(),
          this,
          ASCIIToUTF16(command_line.GetSwitchValueASCII(switches::kLang))));
}
