Zoom level limits must be set before setting a zoom level.

content/renderer/render_view_impl.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_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 785 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SendSwapOutACK);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, StaleNavigationsIgnored);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, UpdateTargetURLWithInvalidURL);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
                            GetCompositionCharacterBoundsTest);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavigationHttpPost);
 #if defined(OS_MACOSX)
   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, MacTestCmdUp);
 #endif
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SetHistoryLengthAndPrune);
+  FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ZoomLimit);
 
   typedef std::map<GURL, double> HostZoomLevels;
 
   enum ErrorPageType {
     DNS_ERROR,
     HTTP_404,
     CONNECTION_ERROR,
   };
 
   RenderViewImpl(gfx::NativeViewId parent_hwnd,
@@ skipping 160 matching lines @@
 #if defined(OS_MACOSX)
   void OnSetInLiveResize(bool in_live_resize);
 #endif
   void OnScrollFocusedEditableNodeIntoRect(const gfx::Rect& rect);
   void OnSetPageEncoding(const std::string& encoding_name);
   void OnSetRendererPrefs(const content::RendererPreferences& renderer_prefs);
 #if defined(OS_MACOSX)
   void OnSetWindowVisibility(bool visible);
 #endif
   void OnSetZoomLevel(double zoom_level);
-  void OnSetZoomLevelForLoadingURL(const GURL& url, double zoom_level);
+  CONTENT_EXPORT void OnSetZoomLevelForLoadingURL(const GURL& url,
+                                                  double zoom_level);
   void OnExitFullscreen();
   void OnShouldClose();
   void OnStop();
   void OnStopFinding(content::StopFindAction action);
   CONTENT_EXPORT void OnSwapOut(const ViewMsg_SwapOut_Params& params);
   void OnThemeChanged();
   void OnUndo();
   void OnUpdateTargetURLAck();
   CONTENT_EXPORT void OnUpdateWebPreferences(
       const webkit_glue::WebPreferences& prefs);
@@ skipping 439 matching lines @@
   // bunch of stuff, you should probably create a helper class and put your
   // data and methods on that to avoid bloating RenderView more.  You can
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_