121 void CountImageSizeMismatchAsPixelDifference(const Image& baseline,  in CountImageSizeMismatchAsPixelDifference()  argument
124   int w = std::min(baseline.w(), actual.w());  in CountImageSizeMismatchAsPixelDifference()
125   int h = std::min(baseline.h(), actual.h());  in CountImageSizeMismatchAsPixelDifference()
128   int max_w = std::max(baseline.w(), actual.w());  in CountImageSizeMismatchAsPixelDifference()
129   int max_h = std::max(baseline.h(), actual.h());  in CountImageSizeMismatchAsPixelDifference()
136 float PercentageDifferent(const Image& baseline, const Image& actual) {  in PercentageDifferent()  argument
137   int w = std::min(baseline.w(), actual.w());  in PercentageDifferent()
138   int h = std::min(baseline.h(), actual.h());  in PercentageDifferent()
144       if (baseline.pixel_at(x, y) != actual.pixel_at(x, y))  in PercentageDifferent()
149   CountImageSizeMismatchAsPixelDifference(baseline, actual, &pixels_different);  in PercentageDifferent()
153 float HistogramPercentageDifferent(const Image& baseline, const Image& actual) {  in HistogramPercentageDifferent()  argument
158   int w = std::min(baseline.w(), actual.w());  in HistogramPercentageDifferent()
159   int h = std::min(baseline.h(), actual.h());  in HistogramPercentageDifferent()
166       ++baseline_histogram[baseline.pixel_at(x, y)];  in HistogramPercentageDifferent()
183   CountImageSizeMismatchAsPixelDifference(baseline, actual, &pixels_different);  in HistogramPercentageDifferent()