Bug 585361 - Remove dead parts from browser_bug380960.js

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extra : rebase_source : f1b562f18e0be9545191cbaf4782138944d9e585
Bug 1004111 - Move remaining themes/*/devtools images into themes/shared/devtools/images; r=bgrins

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rename : browser/themes/linux/devtools/alerticon-warning.png => browser/themes/shared/devtools/images/alerticon-warning.png
rename : browser/themes/linux/devtools/arrow-e.png => browser/themes/shared/devtools/images/arrow-e.png
rename : browser/themes/linux/devtools/background-noise-toolbar.png => browser/themes/shared/devtools/images/background-noise-toolbar.png
rename : browser/themes/linux/devtools/commandline-icon.png => browser/themes/shared/devtools/images/commandline-icon.png
rename : browser/themes/linux/devtools/commandline.png => browser/themes/shared/devtools/images/commandline.png
rename : browser/themes/linux/devtools/dropmarker.png => browser/themes/shared/devtools/images/dropmarker.png
rename : browser/themes/linux/devtools/editor-breakpoint.png => browser/themes/shared/devtools/images/editor-breakpoint.png
rename : browser/themes/linux/devtools/editor-debug-location.png => browser/themes/shared/devtools/images/editor-debug-location.png
rename : browser/themes/linux/devtools/editor-error.png => browser/themes/shared/devtools/images/editor-error.png
rename : browser/themes/linux/devtools/noise.png => browser/themes/shared/devtools/images/noise.png
rename : browser/themes/linux/devtools/option-icon.png => browser/themes/shared/devtools/images/option-icon.png
rename : browser/themes/linux/devtools/responsive-background.png => browser/themes/shared/devtools/images/responsive-background.png
rename : browser/themes/linux/devtools/responsive-horizontal-resizer.png => browser/themes/shared/devtools/images/responsive-horizontal-resizer.png
rename : browser/themes/linux/devtools/responsive-se-resizer.png => browser/themes/shared/devtools/images/responsive-se-resizer.png
rename : browser/themes/linux/devtools/responsive-vertical-resizer.png => browser/themes/shared/devtools/images/responsive-vertical-resizer.png
rename : browser/themes/linux/devtools/toggle-tools.png => browser/themes/shared/devtools/images/toggle-tools.png
rename : browser/themes/linux/devtools/tracer-icon.png => browser/themes/shared/devtools/images/tracer-icon.png
rename : browser/themes/linux/devtools/tracer-icon@2x.png => browser/themes/shared/devtools/images/tracer-icon@2x.png
rename : browser/themes/linux/devtools/webconsole.png => browser/themes/shared/devtools/images/webconsole.png