Update web-content-filtering.md

Text update to account for changes to our data provider.  
Also - 15 min for policy sync is incorrect.  SLA should be 2hrs. 
Include other 3rd party browsers which NP supports.  This is a server-side change which requires no client side changes.

windows/security/threat-protection/microsoft-defender-atp/web-content-filtering.md

@@ -32,7 +32,7 @@ Web content filtering is part of [Web protection](web-protection-overview.md) ca
 
 Configure policies across your device groups to block certain categories. Blocking a category prevents users within specified device groups from accessing URLs associated with the category. For any category that's not blocked, the URLs are automatically audited. Your users can access the URLs without disruption, and you'll gather access statistics to help create a more custom policy decision. Your users will see a block notification if an element on the page they're viewing is making calls to a blocked resource.
 
-Web content filtering is available on the major web browsers, with blocks performed by Windows Defender SmartScreen (Microsoft Edge) and Network Protection (Chrome and Firefox). For more information about browser support, see the prerequisites section.
+Web content filtering is available on the major web browsers, with blocks performed by Windows Defender SmartScreen (Microsoft Edge) and Network Protection (Chrome, Firefox, Brave and Opera). For more information about browser support, see the prerequisites section.
 
 Summarizing the benefits:
 
@@ -42,7 +42,7 @@ Summarizing the benefits:
 
 ## User experience
 
-The blocking experience for Chrome/Firefox is provided by Network Protection, which provides a system-level toast notifying the user of a blocked connection. 
+The blocking experience for 3rd party supported browsers is provided by Network Protection, which provides a system-level toast notifying the user of a blocked connection. 
 
 For a more user-friendly in-browser experience, consider using Microsoft Edge.
 
@@ -54,11 +54,11 @@ Before trying out this feature, make sure you have the following requirements:
 - Access to Microsoft Defender Security Center portal
 - Devices running Windows 10 Anniversary Update (version 1607) or later with the latest MoCAMP update.
 
-If Windows Defender SmartScreen isn't turned on, Network Protection will take over the blocking. It requires [enabling Network Protection](enable-network-protection.md) on the device.
+If Windows Defender SmartScreen isn't turned on, Network Protection will take over the blocking. It requires [enabling Network Protection](enable-network-protection.md) on the device.  Chrome, Firefox, Brave and Opera are currently 3rd party browsers in which the feature is enabled. 
 
 ## Data handling
 
-We will follow whichever region you have elected to use as part of your [Microsoft Defender for Endpoint data handling settings](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-atp/data-storage-privacy). Your data will not leave the data center in that region. In addition, your data will not be shared with any third-parties, including our data providers. However, we may send them aggregate data (across users and organizations) to help them improve their feeds.
+We will follow whichever region you have elected to use as part of your [Microsoft Defender for Endpoint data handling settings](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-atp/data-storage-privacy). Your data will not leave the data center in that region. In addition, your data will not be shared with any third-parties, including our data providers.
 
 ## Turn on web content filtering
 
@@ -78,7 +78,7 @@ To add a new policy:
 2. Specify a name.
 3. Select the categories to block. Use the expand icon to fully expand each parent category and select specific web content categories.
 4. Specify the policy scope. Select the device groups to specify where to apply the policy. Only devices in the selected device groups will be prevented from accessing websites in the selected categories.
-5. Review the summary and save the policy. The policy may take up to 15 minutes to apply to your selected devices.
+5. Review the summary and save the policy. The policy refresh may take up to 2 hours to apply to your selected devices.
 
 Tip: You can deploy a policy without selecting any category on a device group. This action will create an audit only policy, to help you understand user behavior before creating a block policy.
 
@@ -138,7 +138,7 @@ Use the time range filter at the top left of the page to select a time period. Y
 
 ### Limitations and known issues in this preview
 
-- Only Microsoft Edge is supported if your device's OS configuration is Server (cmd > Systeminfo > OS Configuration). Network Protection is only supported in Inspect mode on Server devices, which is responsible for securing traffic across Chrome/Firefox.
+- Only Microsoft Edge is supported if your device's OS configuration is Server (cmd > Systeminfo > OS Configuration). Network Protection is only supported in Inspect mode on Server devices, which is responsible for securing traffic across supported 3rd party browsers.
 
 - Unassigned devices will have incorrect data shown within the report. In the Report details > Device groups pivot, you may see a row with a blank Device Group field. This group contains your unassigned devices before they get put into your specified group. The report for this row may not contain an accurate count of devices or access counts.