Fix the gdb path for NDK-r8b.

content/shell/android/java/content_shell_apk.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="ContentShell" default="debug" basedir=".">
   <description>
     Building ContentShell.apk
   </description>
   <import file="../../../../build/android/ant/common.xml"/>
   <import file="../../../../build/android/ant/sdk-targets.xml"/>
   <property-value name="target.abi" value="${APP_ABI}"/>
   <property-location name="out.dir" location="${PRODUCT_DIR}/content_shell"
       check-exists="false"/>
   <property name="resource.absolute.dir" value="../res"/>
   <property name="gen.absolute.dir" value="${out.dir}/gen"/>
   <property name="jar.libs.dir" value="${out.dir}/java/libs"/>
   <path id="native.libs.gdbserver">
-    <fileset file="${toolchain.dir}/../../gdbserver"/>
+    <fileset file="${toolchain.dir}/../../../../../prebuilt/android-${ndk.target.arch}/gdbserver/gdbserver"/>

[Yaron, 2012/08/22 22:51:35]

Actually I don't think you can do this in one change because the variable won't
be defined for the webkit apk targets. (e.g.
third_party/WebKit/Tools/DumpRenderTree/DumpRenderTree.gyp/DumpRenderTree.gyp
and there are two others).

I think you need to define the gyp variable in envsetup and in chromium gyp. A
separate change in webkit gyp and then add this target once those are both
landed.

[Peter Beverloo, 2012/08/23 10:45:48]

We can pass defines/properties to ant without things breaking if they aren't
being used yet, so in this case a WebKit change can land first, after which
(when WebKit rolls into Chromium) this should be fine to land.

I'm a bit concerned about the number of level-ups ("../") this line relies on.
For clarity, also exporting ANDROID_NDK_ROOT may be better, but that would
indeed increase the number of defines even more. The repetition of invocating
and passing all the arguments is too common now, can we consolidate this even
more to a single gypi?

[michaelbai, 2012/08/23 22:53:00]

I agreed and will file a bug for refactoring this part.

On 2012/08/23 10:45:48, Peter Beverloo wrote:

   </path>
   <property name="native.libs.absolute.dir" location="${out.dir}/libs"/>
   <property name="asset.absolute.dir" location="${out.dir}/assets"/>
 
   <path id="out.dex.jar.input.ref">
     <fileset file="${out.dir}/java/libs/chromium_content.jar"/>
     <fileset file="${out.dir}/java/libs/chromium_net.jar"/>
     <fileset file="${out.dir}/java/libs/chromium_base.jar"/>
     <fileset file="${out.dir}/java/libs/chromium_media.jar"/>
   </path>
@@ skipping 28 matching lines @@
       </then>
     </if>
   </target>
 
   <!-- Classpath for javac -->
   <path id="javac.custom.classpath">
     <path refid="out.dex.jar.input.ref"/>
   </path>
   <import file="${sdk.dir}/tools/ant/build.xml"/>
 </project>