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

content/shell/shell_content_browser_client.cc

Index: content/shell/shell_content_browser_client.cc
diff --git a/content/shell/shell_content_browser_client.cc b/content/shell/shell_content_browser_client.cc
index bd44716e510fd4cfca0a1426724a8af7357e975c..b973052b5cbc32d41291a42f9ab97b05280d4f53 100644
--- a/content/shell/shell_content_browser_client.cc
+++ b/content/shell/shell_content_browser_client.cc
@@ -10,6 +10,7 @@
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/browser/storage_partition.h"
+#include "content/public/common/content_switches.h"
 #include "content/shell/geolocation/shell_access_token_store.h"
 #include "content/shell/shell.h"
 #include "content/shell/shell_browser_context.h"
@@ -160,6 +161,12 @@ std::string ShellContentBrowserClient::GetDefaultDownloadName() {
   return "download";
 }
 
+bool ShellContentBrowserClient::SupportsBrowserPlugin(
+    content::BrowserContext* browser_context, const GURL& url) {
+  return CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableBrowserPluginForAllViewTypes);
+}
+
 WebContentsViewDelegate* ShellContentBrowserClient::GetWebContentsViewDelegate(
     WebContents* web_contents) {
 #if !defined(USE_AURA)