Change Win32k PPAPI lockdown to use finch params for mime type.

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
diff --git a/content/public/browser/content_browser_client.h b/content/public/browser/content_browser_client.h
index 0cf89389b7476c3c277f3aa602dfc935814b07e7..b19adfb5fcf98798f3b508bd9890ed3b7e4aef3e 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -751,6 +751,11 @@ class CONTENT_EXPORT ContentBrowserClient {
   // an AppContainer.
   virtual base::string16 GetAppContainerSidForSandboxType(
       int sandbox_type) const;
+
+  // Returns whether the Win32k lockdown process mitigation should be applied to
+  // a process hosting a plugin with the specified |mime_type|.
+  virtual bool IsWin32kLockdownEnabledForMimeType(
+      const std::string& mime_type) const;
 #endif
 
 #if defined(VIDEO_HOLE)