Move mixed content settings histograms into browser

content/renderer/render_frame_proxy.h

Index: content/renderer/render_frame_proxy.h
diff --git a/content/renderer/render_frame_proxy.h b/content/renderer/render_frame_proxy.h
index 405c8818519e51c74ca572fc37b50ecf78677508..a10f2d71dc4ef0475a8edfae036d67e5df519d65 100644
--- a/content/renderer/render_frame_proxy.h
+++ b/content/renderer/render_frame_proxy.h
@@ -136,6 +136,10 @@ class CONTENT_EXPORT RenderFrameProxy
   void advanceFocus(blink::WebFocusType type,
                     blink::WebLocalFrame* source) override;
   void frameFocused() override;
+  void triedDisplayingInsecureContent(const blink::WebSecurityOrigin&,
+                                      const blink::WebURL&) override;
+  void triedRunningInsecureContent(const blink::WebSecurityOrigin&,
+                                   const blink::WebURL&) override;
 
   // IPC handlers
   void OnDidStartLoading();