Reset page scale factor to 1.0f on new page navigation.

content/renderer/render_view_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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 3502 matching lines @@
   bool enable_fixed_layout =
       command_line.HasSwitch(switches::kEnableFixedLayout);
 
   webview()->enableFixedLayoutMode(enable_fixed_layout || enable_viewport);
 
   // If viewport tag is enabled, then the WebKit side will take care
   // of setting the fixed layout size and page scale limits.
   if (enable_viewport)
     return;
 
+  // When navigating to a new page, reset the page scale factor to be 1.0.
+  webview()->setInitialPageScaleOverride(1.f);
+
   if (enable_fixed_layout) {
     std::string str =
         command_line.GetSwitchValueASCII(switches::kEnableFixedLayout);
     std::vector<std::string> tokens;
     base::SplitString(str, ',', &tokens);
     if (tokens.size() == 2) {
       int width, height;
       if (base::StringToInt(tokens[0], &width) &&
           base::StringToInt(tokens[1], &height))
         webview()->setFixedLayoutSize(WebSize(width, height));
     }
   }
   float maxPageScaleFactor =
       command_line.HasSwitch(switches::kEnablePinch) ? 4.f : 1.f ;
   webview()->setPageScaleFactorLimits(1, maxPageScaleFactor);

[aelias_OOO_until_Jul13, 2013/06/27 00:14:59]

nit: move the call here as the two calls are related.

 }
 
 void RenderViewImpl::didStartProvisionalLoad(WebFrame* frame) {
   WebDataSource* ds = frame->provisionalDataSource();
 
   // In fast/loader/stop-provisional-loads.html, we abort the load before this
   // callback is invoked.
   if (!ds)
     return;
 
@@ skipping 3217 matching lines @@
     WebURL url = icon_urls[i].iconURL();
     if (!url.isEmpty())
       urls.push_back(FaviconURL(url,
                                 ToFaviconType(icon_urls[i].iconType())));
   }
   SendUpdateFaviconURL(urls);
 }
 
 
 }  // namespace content