Fix page zoom to be frame-centric for out-of-process frames.

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index 8fc436c252598f4e4d00a997661f054559cfe711..c01f88da334630060a2c77275d6de70ec7f27f1a 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -220,6 +220,9 @@ class CONTENT_EXPORT RenderViewHostDelegate {
   // to this view.
   virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap();
 
+  // Returns the zoom level for the page.
+  virtual double PageZoomLevel();

[ncarter (slow), 2016/04/11 22:17:03]

Rename to GetPageZoomLevel

[wjmaclean, 2016/04/13 18:47:47]

Done.

+
   // Returns true if the RenderViewHost will never be visible.
   virtual bool IsNeverVisible();