Introduces DevToolsManagerDelegate.

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
diff --git a/content/public/browser/content_browser_client.h b/content/public/browser/content_browser_client.h
index 5f0473ba8649e6312e8392d12c6f9d2e2169aee3..8bef6cae66a9cd734e44fdc6725113d9932e964e 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -88,6 +88,7 @@ class BrowserPluginGuestDelegate;
 class BrowserPpapiHost;
 class BrowserURLHandler;
 class DesktopNotificationDelegate;
+class DevToolsManagerDelegate;
 class ExternalVideoSurfaceContainer;
 class LocationProvider;
 class MediaObserver;
@@ -593,6 +594,10 @@ class CONTENT_EXPORT ContentBrowserClient {
   // information.
   virtual VibrationProvider* OverrideVibrationProvider();
 
+  // Creates a new DevToolsManagerDelegate. The caller owns the returned value.
+  // It's valid to return NULL.
+  virtual DevToolsManagerDelegate* GetDevToolsManagerDelegate();
+
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   // Populates |mappings| with all files that need to be mapped before launching
   // a child process.