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

chrome/browser/chrome_page_zoom.cc

Index: chrome/browser/chrome_page_zoom.cc
===================================================================
--- chrome/browser/chrome_page_zoom.cc	(revision 114285)
+++ chrome/browser/chrome_page_zoom.cc	(working copy)
@@ -2,6 +2,7 @@
 // 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"
@@ -18,6 +19,7 @@
 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) {
@@ -26,7 +28,7 @@
   // 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);