Make VibrationMessageFilter available to other platforms.

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 e862ca97d371680d01b6f429a9e5fbd6cc3b5ac8..469d0a3cef31cc6442124481cdb61db1be0286f2 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -94,6 +94,7 @@ class RenderViewHostDelegateView;
 class ResourceContext;
 class SiteInstance;
 class SpeechRecognitionManagerDelegate;
+class VibrationProvider;
 class WebContents;
 class WebContentsViewDelegate;
 class WebContentsViewPort;
@@ -571,6 +572,10 @@ class CONTENT_EXPORT ContentBrowserClient {
   // Return NULL to use the default one for the platform to be created.
   virtual LocationProvider* OverrideSystemLocationProvider();
 
+  // Allows an embedder to return its own VibrationProvider implementation.
+  // Return NULL to use the default one for the platform to be created.
+  virtual VibrationProvider* OverrideVibrationProvider();

[Avi (use Gerrit), 2013/11/18 18:56:31]

What's the rationale here? Are we expecting the embedder to need to override the
vibration provider?

[ostap, 2013/11/18 21:47:18]

Yes, it adds possibility to override vibration provider.

[Avi (use Gerrit), 2013/11/18 21:49:49]

That wasn't my question. Yes, it offers the possibility, but are you expecting
that you'll need it? I'd rather hold off on that until we know it will be
needed, rather than put it in and have an unused override point sitting there.

+
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   // Populates |mappings| with all files that need to be mapped before launching
   // a child process.