Upstream android i18n change

base/i18n/rtl.cc

Index: base/i18n/rtl.cc
diff --git a/base/i18n/rtl.cc b/base/i18n/rtl.cc
index 9684b1d94c586c340254296f3bc49b9358b6174f..ba16c6584d3fd173b66f4368a4e0f55c7a289cae 100644
--- a/base/i18n/rtl.cc
+++ b/base/i18n/rtl.cc
@@ -215,15 +215,15 @@ bool AdjustStringForLocaleDirection(string16* text) {
   bool has_rtl_chars = StringContainsStrongRTLChars(*text);
   if (!ui_direction_is_rtl && has_rtl_chars) {
     WrapStringWithRTLFormatting(text);
-    text->insert(0, 1, kLeftToRightMark);
+    text->insert(0U, 1U, kLeftToRightMark);
     text->push_back(kLeftToRightMark);
   } else if (ui_direction_is_rtl && has_rtl_chars) {
     WrapStringWithRTLFormatting(text);
-    text->insert(0, 1, kRightToLeftMark);
+    text->insert(0U, 1U, kRightToLeftMark);
     text->push_back(kRightToLeftMark);
   } else if (ui_direction_is_rtl) {
     WrapStringWithLTRFormatting(text);
-    text->insert(0, 1, kRightToLeftMark);
+    text->insert(0U, 1U, kRightToLeftMark);
     text->push_back(kRightToLeftMark);
   }
 
@@ -258,7 +258,7 @@ void WrapStringWithLTRFormatting(string16* text) {
     return;
 
   // Inserting an LRE (Left-To-Right Embedding) mark as the first character.
-  text->insert(0, 1, kLeftToRightEmbeddingMark);
+  text->insert(0U, 1U, kLeftToRightEmbeddingMark);
 
   // Inserting a PDF (Pop Directional Formatting) mark as the last character.
   text->push_back(kPopDirectionalFormatting);
@@ -269,7 +269,7 @@ void WrapStringWithRTLFormatting(string16* text) {
     return;
 
   // Inserting an RLE (Right-To-Left Embedding) mark as the first character.
-  text->insert(0, 1, kRightToLeftEmbeddingMark);
+  text->insert(0U, 1U, kRightToLeftEmbeddingMark);
 
   // Inserting a PDF (Pop Directional Formatting) mark as the last character.
   text->push_back(kPopDirectionalFormatting);