Bug 938549 - Recompiling shaders when highlighting is very heavy and loses cached state, r=rcampbell

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rename : browser/devtools/shadereditor/test/browser_se_programs-blackbox.js => browser/devtools/shadereditor/test/browser_se_programs-blackbox-01.js
rename : browser/devtools/shadereditor/test/browser_se_programs-highlight.js => browser/devtools/shadereditor/test/browser_se_programs-highlight-01.js