Enable OperatorWrap check as a warning for Java presubmit.

tools/android/checkstyle/chromium-style-5.0.xml

Index: tools/android/checkstyle/chromium-style-5.0.xml
diff --git a/tools/android/checkstyle/chromium-style-5.0.xml b/tools/android/checkstyle/chromium-style-5.0.xml
index 17b44b483d936e2d4f246af548c839993abb2023..bdc166a0ffeb055744228d06ad29a88c2fbdc475 100644
--- a/tools/android/checkstyle/chromium-style-5.0.xml
+++ b/tools/android/checkstyle/chromium-style-5.0.xml
@@ -164,6 +164,12 @@
       <property name="throwsIndent" value="8"/>
       <property name="lineWrappingIndentation" value="8"/>
     </module>
+    <!-- TODO(aurimas): make OperatorWrap into an error once all the warnings are fixed. -->
+    <module name="OperatorWrap">

[newt (away), 2014/10/21 03:35:16]

Do we also want to check that "=" comes at the end of the line? i.e.

<module name="OperatorWrap">
    <property name="tokens" value="ASSIGN"/>
    <property name="option" value="eol"/>
</module>

+      <property name="severity" value="warning"/>
+      <property name="option" value="NL" />
+      <property name="tokens" value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR, LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR " />
+    </module>
   </module>
   <module name="FileTabCharacter">
     <property name="severity" value="error"/>