[Checkstyle] Enable additional name checks for Java.

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 6ddd2301e1e922da07622f9e69bcf55edee52161..383c9fccbee5753385ee808b14bda67cf9c07fff 100644
--- a/tools/android/checkstyle/chromium-style-5.0.xml
+++ b/tools/android/checkstyle/chromium-style-5.0.xml
@@ -42,7 +42,7 @@
       <property name="format" value="^[a-z]+(\.[a-z][a-z0-9_]{1,})*$"/>
     </module>
     <module name="TypeName">
-      <property name="severity" value="warning"/>
+      <property name="severity" value="error"/>
     </module>
     <module name="ConstantName">
       <property name="severity" value="error"/>
@@ -63,15 +63,23 @@
         <property name="applyToPublic" value="false"/>
         <message key="name.invalidPattern" value="Static field names start with s."/>
     </module>
-    <module name="MethodName" />
+    <module name="MethodName">
+        <property name="severity" value="error"/>
+        <property name="format" value="^[a-z][a-zA-Z0-9_]*$"/>
+        <message key="name.invalidPattern" value="Method names should start with a lower case letter (e.g. getWidth())"/>
+    </module>
     <module name="ParameterName">
-      <property name="severity" value="warning"/>
+      <property name="severity" value="error"/>
     </module>
     <module name="LocalFinalVariableName">
-      <property name="severity" value="warning"/>
+      <property name="severity" value="error"/>
+      <property name="format" value="^m|s|((([ms][a-z0-9])|([a-ln-rt-z]))[a-zA-Z0-9]*)$"/>
+      <message key="name.invalidPattern" value="Local variables should be camel-cased (e.g. int minWidth = 4)."/>
     </module>
     <module name="LocalVariableName">
-      <property name="severity" value="warning"/>
+      <property name="severity" value="error"/>
+      <property name="format" value="^m|s|((([ms][a-z0-9])|([a-ln-rt-z]))[a-zA-Z0-9]*)$"/>
+      <message key="name.invalidPattern" value="Local variables should be camel-cased (e.g. int minWidth = 4)."/>
     </module>
     <module name="LineLength">
       <property name="severity" value="error"/>
@@ -135,8 +143,11 @@
       <property name="option" value="top"/>
       <property name="separated" value="true"/>
     </module>
+    <!-- TODO(aurimas): make indentation an error once https://github.com/checkstyle/checkstyle/issues/255 is fixed. -->
     <module name="Indentation">
+      <property name="severity" value="warning"/>
       <property name="basicOffset" value="4"/>
+      <property name="throwsIndent" value="8"/>
     </module>
   </module>
   <module name="FileTabCharacter"/>