Move chrome zoom constants into their own file.

chrome/browser/chrome_page_zoom_constants.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"
+#include "chrome/browser/chrome_page_zoom_constants.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 < 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 ?
-      WebKit::WebView::zoomFactorToZoomLevel(content::kMinimumZoomFactor) :
-      content::kMinimumZoomFactor;
-  double max = value_type == PAGE_ZOOM_VALUE_TYPE_LEVEL ?
-      WebKit::WebView::zoomFactorToZoomLevel(content::kMaximumZoomFactor) :
-      content::kMaximumZoomFactor;
-  if (!found_custom && custom_value > min && custom_value < max) {
-    zoom_values.push_back(custom_value);
-    std::sort(zoom_values.begin(), zoom_values.end());
-  }
-  return zoom_values;
-}
-
-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