Introduces DevToolsManagerDelegate.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 06b97e7f9bcecdad3efef4f6b4c870917907cd30..44ad4e3c09b427ec0d38f6f04f56e09b6748ea73 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -31,6 +31,7 @@
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/defaults.h"
+#include "chrome/browser/devtools/devtools_manager_delegate_impl.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/extensions/browser_permissions_policy_delegate.h"
@@ -2698,6 +2699,11 @@ bool ChromeContentBrowserClient::IsPluginAllowedToUseDevChannelAPIs() {
 #endif
 }
 
+content::DevToolsManagerDelegate*
+ChromeContentBrowserClient::GetDevToolsManagerDelegate() {
+  return new DevToolsManagerDelegateImpl();
+}
+
 #if defined(ENABLE_WEBRTC)
 void ChromeContentBrowserClient::MaybeCopyDisableWebRtcEncryptionSwitch(
     CommandLine* to_command_line,