Remove unused printing unit conversion functions.

Change-Id: I4a325218a3db80731e1a110e1beab38ecc071530
Reviewed-on: https://chromium-review.googlesource.com/1111678Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569764}

printing/units.cc

@@ -28,18 +28,6 @@ double ConvertUnitDouble(double value, double old_unit, double new_unit) {
   return value * new_unit / old_unit;
 }
 
-int ConvertMilliInchToHundredThousanthMeter(int milli_inch) {
-  // 1" == 25.4 mm
-  // 1" == 25400 um
-  // 0.001" == 25.4 um
-  // 0.001" == 2.54 cmm
-  return ConvertUnit(milli_inch, 100, 254);
-}
-
-int ConvertHundredThousanthMeterToMilliInch(int cmm) {
-  return ConvertUnit(cmm, 254, 100);
-}
-
 int ConvertPixelsToPoint(int pixels) {
   return ConvertUnit(pixels, kPixelsPerInch, kPointsPerInch);
 }

printing/units.h

@@ -50,12 +50,6 @@ PRINTING_EXPORT int ConvertUnit(double value, int old_unit, int new_unit);
 PRINTING_EXPORT double ConvertUnitDouble(double value, double old_unit,
                                          double new_unit);
 
-// Converts from 0.001 inch unit to 0.00001 meter.
-PRINTING_EXPORT int ConvertMilliInchToHundredThousanthMeter(int milli_inch);
-
-// Converts from 0.00001 meter unit to 0.001 inch.
-PRINTING_EXPORT int ConvertHundredThousanthMeterToMilliInch(int cmm);
-
 // Converts from 1 pixel to 1 point using integers.
 PRINTING_EXPORT int ConvertPixelsToPoint(int pixels);
 

printing/units_unittest.cc

@@ -51,15 +51,6 @@ TEST(UnitsTest, Convertions) {
   EXPECT_DOUBLE_EQ(0.000002, ConvertUnitDouble(2, 1000, 0.001));
   EXPECT_EQ(2000000, ConvertUnitDouble(2, 0.001, 1000));
 
-  EXPECT_EQ(kHundrethsMMPerInch, ConvertMilliInchToHundredThousanthMeter(1000));
-  EXPECT_EQ(-kHundrethsMMPerInch,
-            ConvertMilliInchToHundredThousanthMeter(-1000));
-  EXPECT_EQ(0, ConvertMilliInchToHundredThousanthMeter(0));
-  EXPECT_EQ(1000, ConvertHundredThousanthMeterToMilliInch(kHundrethsMMPerInch));
-  EXPECT_EQ(-1000,
-            ConvertHundredThousanthMeterToMilliInch(-kHundrethsMMPerInch));
-  EXPECT_EQ(0, ConvertHundredThousanthMeterToMilliInch(0));
-
   EXPECT_EQ(8.25, ConvertPixelsToPointDouble(11.0));
   // Round down.
   EXPECT_EQ(8, ConvertPixelsToPoint(11));