Revert of Cache the current WebPreferences on RenderViewHostImpl. (https://codereview.chromium.org/373323003/)

Reason for revert:
Causes DOA on 38-dev.

https://code.google.com/p/chromium/issues/detail?id=398751

Original issue's description:
> Cache the current WebPreferences on RenderViewHostImpl.
> 
> This makes lookups of a WebPreferences field fast.
> In order do this, add code to listen to all preferences updates in order to recompute the cache.
> 
> BUG=390799
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284592

TBR=jam, michaelbai, chrishtr, avi
NOTREECHECKS=true
NOTRY=true
BUG=390799

Review URL: https://codereview.chromium.org/429413003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@286876 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 1 deletions

diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 86875b4..7218e14 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -2123,7 +2123,7 @@ void RenderProcessHostImpl::OnGpuSwitching() {
       continue;
 
     RenderViewHost* rvh = RenderViewHost::From(widget);
-    rvh->OnWebkitPreferencesChanged();
+    rvh->UpdateWebkitPreferences(rvh->GetWebkitPreferences());
   }
 }