Rename to ContentSuggestionsNotifier in manifest

I renamed the class, but forgot to change the manifest, and the class
became incapable of receiving intents.

Bug: 764646
Change-Id: Ie6128bd2ea07c0b0d0eb8eefc1d17b1354911c30
Reviewed-on: https://chromium-review.googlesource.com/663730Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Commit-Queue: Chris Pickel <sfiera@chromium.org>
Cr-Commit-Position: refs/heads/master@{#501605}

chrome/android/java/AndroidManifest.xml

@@ -1004,11 +1004,11 @@ android:value="true" />
             </intent-filter>
         </receiver>
 
-        <receiver android:name="org.chromium.chrome.browser.ntp.ContentSuggestionsNotificationHelper$OpenUrlReceiver"
+        <receiver android:name="org.chromium.chrome.browser.ntp.ContentSuggestionsNotifier$OpenUrlReceiver"
             android:exported="false"/>
-        <receiver android:name="org.chromium.chrome.browser.ntp.ContentSuggestionsNotificationHelper$DeleteReceiver"
+        <receiver android:name="org.chromium.chrome.browser.ntp.ContentSuggestionsNotifier$DeleteReceiver"
             android:exported="false"/>
-        <receiver android:name="org.chromium.chrome.browser.ntp.ContentSuggestionsNotificationHelper$TimeoutReceiver"
+        <receiver android:name="org.chromium.chrome.browser.ntp.ContentSuggestionsNotifier$TimeoutReceiver"
             android:exported="false"/>
 
         <service android:name="org.chromium.chrome.browser.media.MediaCaptureNotificationService"