Browser Plugin: Only install BrowserPluginMessageFilter if render process supports BrowserPlugin.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 2c0bdfe3267041f0e91f68a1d48cb7d6f4e6e451..1bdb4f038ff518203662dc1bd34b80654ea1c061 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1967,6 +1967,26 @@ content::BrowserPpapiHost*
   return NULL;
 }
 
+bool ChromeContentBrowserClient::SupportsBrowserPlugin(
+    content::BrowserContext* browser_context, const GURL& site_url) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableBrowserPluginForAllViewTypes))
+    return true;
+
+  Profile* profile = Profile::FromBrowserContext(browser_context);
+  ExtensionService* service =
+      extensions::ExtensionSystem::Get(profile)->extension_service();
+  if (!service)
+    return false;
+
+  const Extension* extension = service->extensions()->
+      GetExtensionOrAppByURL(ExtensionURLInfo(site_url));
+  if (!extension)
+    return false;
+
+  return extension->HasAPIPermission(APIPermission::kWebView);
+}
+
 bool ChromeContentBrowserClient::AllowPepperSocketAPI(
     content::BrowserContext* browser_context,
     const GURL& url,