Fix an unused variable warning.
Fix an unused variable warning.

Review URL: https://codereview.chromium.org/12398026

git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@7975 2bbb7eff-a529-9590-31e7-b0007b416f81

ParanoidAndroid/android_external_skia,X-ROM/android_external_skia,X-ROM/android_external_skia,brothaedhung/external_skia,ParanoidAndroid/android_external_skia,InsomniaROM/platform_external_skia,ParanoidAndroid/android_external_skia,brothaedhung/external_skia,X-ROM/android_external_skia,InsomniaAOSP/platform_external_skia,brothaedhung/external_skia,InsomniaROM/platform_external_skia,InsomniaROM/platform_external_skia,InsomniaAOSP/platform_external_skia,InsomniaAOSP/platform_external_skia,InsomniaAOSP/platform_external_skia,brothaedhung/external_skia,ParanoidAndroid/android_external_skia,X-ROM/android_external_skia,InsomniaROM/platform_external_skia