Move some zoom constants into the headers so we don't have to duplicate the values in plugins.

chrome/browser/chrome_page_zoom.cc

 // Copyright (c) 2011 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 <algorithm>
 #include <cmath>
 
 #include "chrome/browser/chrome_page_zoom.h"
 #include "content/public/common/page_zoom.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 
 namespace chrome_page_zoom {
 
 enum PageZoomValueType {
   PAGE_ZOOM_VALUE_TYPE_FACTOR,
   PAGE_ZOOM_VALUE_TYPE_LEVEL,
 };
 
 const double kPresetZoomFactors[] = { 0.25, 0.333, 0.5, 0.666, 0.75, 0.9, 1.0,
                                       1.1, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 4.0,
                                       5.0 };
+const size_t kPresetZoomFactorsSize = arraysize(kPresetZoomFactors);
 
 std::vector<double> PresetZoomValues(PageZoomValueType value_type,
                                      double custom_value) {
   // Generate a vector of zoom values from an array of known preset
   // factors. The values in content::kPresetZoomFactors will already be in
   // sorted order.
   std::vector<double> zoom_values;
   bool found_custom = false;
-  for (size_t i = 0; i < arraysize(kPresetZoomFactors); i++) {
+  for (size_t i = 0; i < kPresetZoomFactorsSize; i++) {
     double zoom_value = kPresetZoomFactors[i];
     if (value_type == PAGE_ZOOM_VALUE_TYPE_LEVEL)
       zoom_value = WebKit::WebView::zoomFactorToZoomLevel(zoom_value);
     if (content::ZoomValuesEqual(zoom_value, custom_value))
       found_custom = true;
     zoom_values.push_back(zoom_value);
   }
   // If the preset array did not contain the custom value, append it to the
   // vector and then sort.
   double min = value_type == PAGE_ZOOM_VALUE_TYPE_LEVEL ?
@@ skipping 11 matching lines @@
 
 std::vector<double> PresetZoomFactors(double custom_factor) {
   return PresetZoomValues(PAGE_ZOOM_VALUE_TYPE_FACTOR, custom_factor);
 }
 
 std::vector<double> PresetZoomLevels(double custom_level) {
   return PresetZoomValues(PAGE_ZOOM_VALUE_TYPE_LEVEL, custom_level);
 }
 
 }  // namespace chrome_page_zoom