Change maxLines and ellipsis argument from nullable to non-null

There is no merge concept in Paragraphs, so just set the reasonable
default value for these arguments.

Bug: 139319934
Test: TreeHuger
Change-Id: I46dac259bcd950ec5c66ecd79c4acac2675b68ba

diff --git a/ui/ui-text/src/androidTest/java/androidx/ui/text/MultiParagraphIntegrationTest.kt b/ui/ui-text/src/androidTest/java/androidx/ui/text/MultiParagraphIntegrationTest.kt
index f2cc10b..c752feeb 100644
--- a/ui/ui-text/src/androidTest/java/androidx/ui/text/MultiParagraphIntegrationTest.kt
+++ b/ui/ui-text/src/androidTest/java/androidx/ui/text/MultiParagraphIntegrationTest.kt

@@ -1255,7 +1255,7 @@
         text: String,
         fontSize: TextUnit = TextUnit.Inherit,
         paragraphStyle: ParagraphStyle = ParagraphStyle(),
-        maxLines: Int? = null,
+        maxLines: Int = Int.MAX_VALUE,
         width: Float = Float.MAX_VALUE
     ): MultiParagraph {
         return MultiParagraph(
@@ -1279,7 +1279,7 @@
         text: AnnotatedString,
         fontSize: TextUnit = TextUnit.Inherit,
         paragraphStyle: ParagraphStyle = ParagraphStyle(),
-        maxLines: Int? = null,
+        maxLines: Int = Int.MAX_VALUE,
         width: Float = Float.MAX_VALUE
     ): MultiParagraph {
         return MultiParagraph(

diff --git a/ui/ui-text/src/androidTest/java/androidx/ui/text/ParagraphIntegrationTest.kt b/ui/ui-text/src/androidTest/java/androidx/ui/text/ParagraphIntegrationTest.kt
index 786341b..972da82 100644
--- a/ui/ui-text/src/androidTest/java/androidx/ui/text/ParagraphIntegrationTest.kt
+++ b/ui/ui-text/src/androidTest/java/androidx/ui/text/ParagraphIntegrationTest.kt

@@ -3174,7 +3174,7 @@
         textIndent: TextIndent? = null,
         textAlign: TextAlign? = null,
         fontSize: TextUnit = TextUnit.Inherit,
-        maxLines: Int? = null,
+        maxLines: Int = Int.MAX_VALUE,
         lineHeight: TextUnit = TextUnit.Inherit,
         spanStyles: List<AnnotatedString.Item<SpanStyle>> = listOf(),
         fontFamily: FontFamily = fontFamilyMeasureFont,

diff --git a/ui/ui-text/src/androidTest/java/androidx/ui/text/platform/AndroidParagraphTest.kt b/ui/ui-text/src/androidTest/java/androidx/ui/text/platform/AndroidParagraphTest.kt
index cf1bf64..845d771 100644
--- a/ui/ui-text/src/androidTest/java/androidx/ui/text/platform/AndroidParagraphTest.kt
+++ b/ui/ui-text/src/androidTest/java/androidx/ui/text/platform/AndroidParagraphTest.kt

@@ -1187,8 +1187,8 @@
         textIndent: TextIndent? = null,
         textAlign: TextAlign? = null,
         textDirectionAlgorithm: TextDirectionAlgorithm? = TextDirectionAlgorithm.ContentOrLtr,
-        ellipsis: Boolean? = null,
-        maxLines: Int? = null,
+        ellipsis: Boolean = false,
+        maxLines: Int = Int.MAX_VALUE,
         constraints: ParagraphConstraints,
         textStyle: TextStyle? = null,
         typefaceAdapter: TypefaceAdapter = TypefaceAdapter()