Reduce verbosity of Android builds.

build/android/ant/sdk-targets.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
   Copyright (c) 2012 The Chromium Authors. All rights reserved.
   Use of this source code is governed by a BSD-style license that can be
   found in the LICENSE file.
 -->
 <project name="chrome_sdk_overrides" >
   <!--
     Redefinition of targets used by SDK tools.
     Supported version: SDK tools revision 20.
@@ skipping 89 matching lines @@
         </then>
       </if>
       <!--
         If the project needs a test jar then generate a jar containing
         all compiled classes and referenced jars.
         project.is.testapp is set by Android's ant build system based on the
         target's manifest. It is true only for instrumentation apks.
       -->
       <if condition="${project.is.testapp}">
         <then>
-          <echo level="info">Creating test jar file:
-              ${ant.project.name}.jar</echo>
           <property-location name="create.test.jar.file"
               location="${CHROMIUM_SRC}/build/android/ant/create-test-jar.js"/>
           <script language="javascript" src="${create.test.jar.file}"/>
         </then>
       </if>
 
     </do-only-if-manifest-hasCode>
   </target>
 
   <!--
@@ skipping 55 matching lines @@
       Copy gdbserver to main libs directory if building a non-instrumentation debug apk.
     -->
     <if>
       <condition>
         <and>
           <equals arg1="${build.target}" arg2="debug"/>
           <isfalse value="${project.is.testapp}"/>
         </and>
       </condition>
       <then>
-        <echo message="Copying gdbserver to the apk to enable native debugging"/>
         <copy todir="${out.dir}/libs/${target.abi}">
           <path refid="native.libs.gdbserver"/>
         </copy>
       </then>
     </if>
 
     <!-- Package all the compiled .class files into a .jar. -->
     <jar
       jarfile="${lib.java.dir}/${JAR_NAME}"
       basedir="${out.classes.absolute.dir}"
@@ skipping 73 matching lines @@
           -libraryjars  ${project.target.classpath.value}
           -dump         "${obfuscate.absolute.dir}/dump.txt"
           -printseeds   "${obfuscate.absolute.dir}/seeds.txt"
           -printusage   "${obfuscate.absolute.dir}/usage.txt"
           -printmapping "${obfuscate.absolute.dir}/mapping.txt"
         </proguard>
       </then>
     </if>
   </target>
 </project>