Make PageScaleFactor work for oopif subframes.

content/browser/renderer_host/render_widget_host_view_base.h

Index: content/browser/renderer_host/render_widget_host_view_base.h
diff --git a/content/browser/renderer_host/render_widget_host_view_base.h b/content/browser/renderer_host/render_widget_host_view_base.h
index 08aad92bb6ced62ea4092f6b837ce1c84544c27d..25223393803276e80f9bb18fa9b3d2c9730fcf7c 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.h
+++ b/content/browser/renderer_host/render_widget_host_view_base.h
@@ -142,6 +142,8 @@ class CONTENT_EXPORT RenderWidgetHostViewBase : public RenderWidgetHostView,
   // to nullptr.
   void DidUnregisterFromTextInputManager(TextInputManager* text_input_manager);
 
+  void SetPageScaleFactorForSubframes(float page_scale);

[kenrb, 2017/01/24 17:13:27]

Is this called anywhere? I can't find a call site.

[wjmaclean, 2017/01/24 18:24:26]

Hmm, no ... I must have copied a stale piece of code during the gardening
process. I think I had originally planned on having RWHIER propagate via
WebContentsImpl, but then switched to sending via the GesturePinchEvents, except
for the part about reloading on restore.

Removed.

+
   base::WeakPtr<RenderWidgetHostViewBase> GetWeakPtr();
 
   //----------------------------------------------------------------------------