<webview>: Support zoom in WebUI

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 2114 matching lines @@
   RenderViewHost* host = GetRenderViewHost();
   int id = StartDownload(host, url, is_favicon, max_bitmap_size);
   image_download_map_[id] = callback;
   return id;
 }
 
 bool WebContentsImpl::IsSubframe() const {
   return is_subframe_;
 }
 
+void WebContentsImpl::SetZoomLevel(double level) {
+  Send(new ViewMsg_SetZoomLevel(GetRoutingID(), level));
+  BrowserPluginEmbedder* embedder = GetBrowserPluginEmbedder();
+  if (embedder)
+    embedder->SetZoomLevel(level);
+}
+
 bool WebContentsImpl::FocusLocationBarByDefault() {
   NavigationEntry* entry = controller_.GetVisibleEntry();
   if (entry && entry->GetURL() == GURL(kAboutBlankURL))
     return true;
   return delegate_ && delegate_->ShouldFocusLocationBarByDefault(this);
 }
 
 void WebContentsImpl::SetFocusToLocationBar(bool select_all) {
   if (delegate_)
     delegate_->SetFocusToLocationBar(select_all);
@@ skipping 1708 matching lines @@
 }
 
 void WebContentsImpl::OnFrameRemoved(
     RenderViewHostImpl* render_view_host,
     int64 frame_id) {
    FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                      FrameDetached(render_view_host, frame_id));
 }
 
 }  // namespace content