Android: Don't set the current minutes to the minutes field of <input type=time step=3600> dialog.

For <input type=time step=3600>, the minutes field should be disabled, and the
value should be the minutes of the minimum value, not the current time.
(Actually, it should be the minutes of the step-base value.  This CL adds TODO()
for it.)

Also, this CL fixes a bug for step>3600.  <input type=time step=5400> should
not disable the minutes field.

BUG=409791

Review URL: https://codereview.chromium.org/954363003

Cr-Commit-Position: refs/heads/master@{#318747}

ui/android/java/src/org/chromium/ui/picker/MultiFieldTimePickerDialog.java

@@ -155,11 +155,14 @@ public class MultiFieldTimePickerDialog
             mMinuteSpinner.setMaxValue(59);
         }
 
-        if (step >= HOUR_IN_MILLIS) {
+        mMinuteSpinner.setValue(minute);
+        if (step % HOUR_IN_MILLIS == 0) {
             mMinuteSpinner.setEnabled(false);
+            // TODO(tkent): We should set minutes value of
+            // WebDateTimeChooserParams::stepBase.
+            mMinuteSpinner.setValue(minMinute);
         }
 
-        mMinuteSpinner.setValue(minute);
         mMinuteSpinner.setFormatter(twoDigitPaddingFormatter);
 
         if (step >= MINUTE_IN_MILLIS) {