diff --git a/dom/ipc/ContentChild.cpp b/dom/ipc/ContentChild.cpp
index 011566f6af4a..82d5d77948e7 100644
--- a/dom/ipc/ContentChild.cpp
+++ b/dom/ipc/ContentChild.cpp
@@ -176,6 +176,41 @@ private:
     PrefObserver& operator=(const PrefObserver&);
 };
 
+class AlertObserver
+{
+public:
+
+    AlertObserver(nsIObserver *aObserver, const nsString& aData)
+        : mData(aData)
+        , mObserver(aObserver)
+    {
+    }
+
+    ~AlertObserver() {}
+
+    bool ShouldRemoveFrom(nsIObserver* aObserver,
+                          const nsString& aData) const
+    {
+        return (mObserver == aObserver &&
+                mData == aData);
+    }
+
+    bool Observes(const nsString& aData) const
+    {
+        return mData.Equals(aData);
+    }
+
+    bool Notify(const nsCString& aType) const
+    {
+        mObserver->Observe(nsnull, aType.get(), mData.get());
+        return true;
+    }
+
+private:
+    nsCOMPtr<nsIObserver> mObserver;
+    nsString mData;
+};
+
 
 ContentChild* ContentChild::sSingleton;
 
@@ -286,7 +321,7 @@ ContentChild::ActorDestroy(ActorDestroyReason why)
     // |if (mDead)| special case below and we're safe.
     mDead = true;
     mPrefObservers.Clear();
-
+    mAlertObservers.Clear();
     XRE_ShutdownChildProcess();
 }
 
@@ -331,6 +366,15 @@ ContentChild::RemoveRemotePrefObserver(const nsCString& aDomain,
     return NS_ERROR_UNEXPECTED;
 }
 
+nsresult
+ContentChild::AddRemoteAlertObserver(const nsString& aData,
+                                     nsIObserver* aObserver)
+{
+    NS_ASSERTION(aObserver, "Adding a null observer?");
+    mAlertObservers.AppendElement(new AlertObserver(aObserver, aData));
+    return NS_OK;
+}
+
 bool
 ContentChild::RecvNotifyRemotePrefObserver(const nsCString& aPref)
 {
@@ -349,6 +393,27 @@ ContentChild::RecvNotifyRemotePrefObserver(const nsCString& aPref)
     return true;
 }
 
+bool
+ContentChild::RecvNotifyAlertsObserver(const nsCString& aType, const nsString& aData)
+{
+    printf("ContentChild::RecvNotifyAlertsObserver %s\n", aType.get() );
+
+    for (PRUint32 i = 0; i < mAlertObservers.Length();
+         /*we mutate the array during the loop; ++i iff no mutation*/) {
+        AlertObserver* observer = mAlertObservers[i];
+        if (observer->Observes(aData) && observer->Notify(aType)) {
+            // if aType == alertfinished, this alert is done.  we can
+            // remove the observer.
+            if (aType.Equals(nsDependentCString("alertfinished"))) {
+                mAlertObservers.RemoveElementAt(i);
+                continue;
+            }
+        }
+        ++i;
+    }
+    return true;
+}
+
 bool
 ContentChild::RecvNotifyVisited(const IPC::URI& aURI)
 {
diff --git a/dom/ipc/ContentChild.h b/dom/ipc/ContentChild.h
index 08e37055e7a2..4059b671240f 100644
--- a/dom/ipc/ContentChild.h
+++ b/dom/ipc/ContentChild.h
@@ -52,6 +52,7 @@ struct OverrideMapping;
 namespace mozilla {
 namespace dom {
 
+class AlertObserver;
 class PrefObserver;
 
 class ContentChild : public PContentChild
@@ -101,14 +102,20 @@ public:
                                       const nsCString& aPrefRoot, 
                                       nsIObserver* aObserver);
 
+    // auto remove when alertfinished is received.
+    nsresult AddRemoteAlertObserver(const nsString& aData, nsIObserver* aObserver);
+
     virtual bool RecvNotifyRemotePrefObserver(const nsCString& aDomain);
     
+    virtual bool RecvNotifyAlertsObserver(const nsCString& aType, const nsString& aData);
+
     virtual bool RecvAsyncMessage(const nsString& aMsg, const nsString& aJSON);
 
 private:
     NS_OVERRIDE
     virtual void ActorDestroy(ActorDestroyReason why);
 
+    nsTArray<nsAutoPtr<AlertObserver> > mAlertObservers;
     nsTArray<nsAutoPtr<PrefObserver> > mPrefObservers;
     bool mDead;
 
diff --git a/dom/ipc/ContentParent.cpp b/dom/ipc/ContentParent.cpp
index 2ce5f1fdba15..5e9b23c0e595 100644
--- a/dom/ipc/ContentParent.cpp
+++ b/dom/ipc/ContentParent.cpp
@@ -56,6 +56,8 @@
 #include "nsExternalHelperAppService.h"
 #include "nsCExternalHandlerService.h"
 #include "nsFrameMessageManager.h"
+#include "nsIAlertsService.h"
+#include "nsToolkitCompsCID.h"
 
 #ifdef ANDROID
 #include "AndroidBridge.h"
@@ -367,6 +369,13 @@ ContentParent::Observe(nsISupports* aSubject,
       if (!SendSetOffline(!strcmp(offline, "true") ? true : false))
           return NS_ERROR_NOT_AVAILABLE;
     }
+    // listening for alert notifications
+    else if (!strcmp(aTopic, "alertfinished") ||
+             !strcmp(aTopic, "alertclickcallback") ) {
+        if (!SendNotifyAlertsObserver(nsDependentCString(aTopic),
+                                      nsDependentString(aData)))
+            return NS_ERROR_NOT_AVAILABLE;
+    }
     return NS_OK;
 }
 
@@ -558,6 +567,19 @@ ContentParent::RecvNotifyIME(const int& aType, const int& aStatus)
 #endif
 }
 
+bool
+ContentParent::RecvShowAlertNotification(const nsString& aImageUrl, const nsString& aTitle,
+                                         const nsString& aText, const PRBool& aTextClickable,
+                                         const nsString& aCookie, const nsString& aName)
+{
+    nsCOMPtr<nsIAlertsService> sysAlerts(do_GetService(NS_ALERTSERVICE_CONTRACTID));
+    if (sysAlerts) {
+        sysAlerts->ShowAlertNotification(aImageUrl, aTitle, aText, aTextClickable,
+                                         aCookie, this, aName);
+    }
+
+    return true;
+}
 
 bool
 ContentParent::RecvSyncMessage(const nsString& aMsg, const nsString& aJSON,
diff --git a/dom/ipc/ContentParent.h b/dom/ipc/ContentParent.h
index 0a36c1e2cd53..b475261257c5 100644
--- a/dom/ipc/ContentParent.h
+++ b/dom/ipc/ContentParent.h
@@ -158,9 +158,11 @@ private:
     virtual bool RecvNotifyIME(const int&, const int&);
 
     virtual bool RecvNotifyIMEChange(const nsString&, const PRUint32&, const int&, 
-                               const int&, const int&)
-;
+                                     const int&, const int&);
 
+    virtual bool RecvShowAlertNotification(const nsString& aImageUrl, const nsString& aTitle,
+                                           const nsString& aText, const PRBool& aTextClickable,
+                                           const nsString& aCookie, const nsString& aName);
 
     virtual bool RecvLoadURIExternal(const IPC::URI& uri);
 
diff --git a/dom/ipc/PContent.ipdl b/dom/ipc/PContent.ipdl
index fef4cd5c4db7..5305c10be402 100644
--- a/dom/ipc/PContent.ipdl
+++ b/dom/ipc/PContent.ipdl
@@ -72,6 +72,8 @@ child:
 
     NotifyRemotePrefObserver(nsCString aDomain);
 
+    NotifyAlertsObserver(nsCString topic, nsString data);
+
 parent:
     PNecko();
 
@@ -102,6 +104,13 @@ parent:
     sync SyncMessage(nsString aMessage, nsString aJSON)
       returns (nsString[] retval);
 
+    ShowAlertNotification(nsString imageUrl, 
+                          nsString title, 
+                          nsString text, 
+                          PRBool textClickable,
+                          nsString cookie,
+                          nsString name);
+
 both:
      AsyncMessage(nsString aMessage, nsString aJSON);
 
diff --git a/toolkit/components/alerts/src/Makefile.in b/toolkit/components/alerts/src/Makefile.in
index 1f61b9001da1..304b2ac9ec29 100644
--- a/toolkit/components/alerts/src/Makefile.in
+++ b/toolkit/components/alerts/src/Makefile.in
@@ -55,6 +55,8 @@ CPPSRCS   = \
 
 LOCAL_INCLUDES += -I$(topsrcdir)/toolkit/components/build/
 
+include $(topsrcdir)/config/config.mk
+include $(topsrcdir)/ipc/chromium/chromium-config.mk
 include $(topsrcdir)/config/rules.mk
 
 EXTRA_DSO_LDOPTS += $(MOZ_COMPONENT_LIBS)
diff --git a/toolkit/components/alerts/src/nsAlertsService.cpp b/toolkit/components/alerts/src/nsAlertsService.cpp
index 620192ff4ebd..c4dd5a152ef3 100644
--- a/toolkit/components/alerts/src/nsAlertsService.cpp
+++ b/toolkit/components/alerts/src/nsAlertsService.cpp
@@ -38,6 +38,12 @@
  *
  * ***** END LICENSE BLOCK ***** */
 
+#ifdef MOZ_IPC
+#include "mozilla/dom/ContentChild.h"
+#include "nsXULAppAPI.h"
+using mozilla::dom::ContentChild;
+#endif
+
 #include "nsAlertsService.h"
 
 #ifdef ANDROID
@@ -82,6 +88,23 @@ NS_IMETHODIMP nsAlertsService::ShowAlertNotification(const nsAString & aImageUrl
                                                      nsIObserver * aAlertListener,
                                                      const nsAString & aAlertName)
 {
+#ifdef MOZ_IPC
+  if (XRE_GetProcessType() == GeckoProcessType_Content) {
+    ContentChild* cpc = ContentChild::GetSingleton();
+
+    if (aAlertListener)
+      cpc->AddRemoteAlertObserver(nsDependentString(aAlertCookie), aAlertListener);
+
+    cpc->SendShowAlertNotification(nsAutoString(aImageUrl),
+                                   nsAutoString(aAlertTitle),
+                                   nsAutoString(aAlertText),
+                                   aAlertTextClickable,
+                                   nsAutoString(aAlertCookie),
+                                   nsAutoString(aAlertName));
+    return NS_OK;
+  }
+#endif
+
 #ifdef ANDROID
   mozilla::AndroidBridge::Bridge()->ShowAlertNotification(aImageUrl, aAlertTitle, aAlertText, aAlertCookie,
                                                           aAlertListener, aAlertName);