Polymer: Remove unused paper-dialog and paper-dialog-behavior.

third_party/polymer/v1_0/bower.json

 {
   "name": "chromium",
   "private": true,
   "dependencies": {
     "font-roboto": "PolymerElements/font-roboto#1.0.1",
     "iron-a11y-announcer": "PolymerElements/iron-a11y-announcer#1.0.5",
     "iron-a11y-keys-behavior": "PolymerElements/iron-a11y-keys-behavior#1.1.9",
     "iron-a11y-keys": "PolymerElements/iron-a11y-keys#1.0.7",
     "iron-autogrow-textarea": "PolymerElements/iron-autogrow-textarea#1.0.13",
     "iron-behaviors": "PolymerElements/iron-behaviors#1.0.17",
@@ skipping 18 matching lines @@
     "iron-resizable-behavior": "PolymerElements/iron-resizable-behavior#1.0.5",
     "iron-scroll-target-behavior": "PolymerElements/iron-scroll-target-behavior#1.1.0",
     "iron-scroll-threshold": "PolymerElements/iron-scroll-threshold#1.0.2",
     "iron-selector": "PolymerElements/iron-selector#1.5.2",
     "iron-test-helpers": "PolymerElements/iron-test-helpers#1.2.5",
     "iron-validatable-behavior": "PolymerElements/iron-validatable-behavior#1.1.1",
     "neon-animation": "PolymerElements/neon-animation#1.2.4",
     "paper-behaviors": "PolymerElements/paper-behaviors#1.0.12",
     "paper-button": "PolymerElements/paper-button#1.0.13",
     "paper-checkbox": "PolymerElements/paper-checkbox#1.4.0",
-    "paper-dialog-behavior": "PolymerElements/paper-dialog-behavior#1.2.7",
-    "paper-dialog": "PolymerElements/paper-dialog#1.1.0",
     "paper-drawer-panel": "PolymerElements/paper-drawer-panel#1.0.10",
     "paper-fab": "PolymerElements/paper-fab#1.2.0",
     "paper-header-panel": "PolymerElements/paper-header-panel#1.1.6",
     "paper-icon-button": "PolymerElements/paper-icon-button#1.1.6",
     "paper-input": "PolymerElements/paper-input#1.1.21",
     "paper-item": "PolymerElements/paper-item#1.2.1",
     "paper-listbox": "PolymerelEments/paper-listbox#1.1.2",
     "paper-material": "PolymerElements/paper-material#1.0.6",
     "paper-menu": "PolymerElements/paper-menu#1.3.0",
     "paper-progress": "PolymerElements/paper-progress#1.0.10",
     "paper-radio-button": "PolymerElements/paper-radio-button#1.4.0",
     "paper-radio-group": "PolymerElements/paper-radio-group#1.2.0",
     "paper-ripple": "PolymerElements/paper-ripple#1.0.9",
     "paper-slider": "PolymerElements/paper-slider#1.0.15",
     "paper-spinner": "PolymerElements/paper-spinner#1.2.0",
     "paper-styles": "PolymerElements/paper-styles#1.1.4",
     "paper-tabs": "PolymerElements/paper-tabs#1.6.2",
     "paper-toggle-button": "PolymerElements/paper-toggle-button#1.3.0",
     "paper-toolbar": "PolymerElements/paper-toolbar#1.1.6",
     "paper-tooltip": "PolymerElements/paper-tooltip#1.1.3",
     "polymer": "Polymer/polymer#1.9.1",
     "web-animations-js": "web-animations/web-animations-js#2.2.2"
   }
 }