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This creates the necessarily files and GYP targets to start adding tests
for the debugger code. There is currently one test added, more will be added
once the infrastructure is in place.

BUG=
R=mtklein@google.com

Author: dsinclair@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23589007

git-svn-id: http://skia.googlecode.com/svn/trunk@11342 2bbb7eff-a529-9590-31e7-b0007b416f81