<webview>: Support zoom in WebUI

content/public/browser/web_contents.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 464 matching lines @@
                             bool is_favicon,
                             uint32_t max_bitmap_size,
                             const ImageDownloadCallback& callback) = 0;
 
   // Returns true if the WebContents is responsible for displaying a subframe
   // in a different process from its parent page.
   // TODO: this doesn't really belong here. With site isolation, this should be
   // removed since we can then embed iframes in different processes.
   virtual bool IsSubframe() const = 0;
 
+  // Sets the zoom level for the current main frame and all BrowserPluginGuests

[nasko, 2014/01/08 21:59:06]

nit: My point was that it affects all frames, not just the main one. Maybe say
"for the current page and all ...",

[Fady Samuel, 2014/01/09 16:19:45]

Done.

+  // within the page.
+  virtual void SetZoomLevel(double level) = 0;
+
 #if defined(OS_ANDROID)
   CONTENT_EXPORT static WebContents* FromJavaWebContents(
       jobject jweb_contents_android);
   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() = 0;
 #endif  // OS_ANDROID
 
  private:
   // This interface should only be implemented inside content.
   friend class WebContentsImpl;
   WebContents() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_