MD User Manager: Refactors existing dialogs in User Manager into <user-manager-dialog>

chrome/browser/resources/md_user_manager/compiled_resources2.gyp

Index: chrome/browser/resources/md_user_manager/compiled_resources2.gyp
diff --git a/chrome/browser/resources/md_user_manager/compiled_resources2.gyp b/chrome/browser/resources/md_user_manager/compiled_resources2.gyp
index d40c46d4ac1e751dbbe37d1278e9b0871ae0d933..a2526e9714fc79c1728a03fba0645f99c15cea2d 100644
--- a/chrome/browser/resources/md_user_manager/compiled_resources2.gyp
+++ b/chrome/browser/resources/md_user_manager/compiled_resources2.gyp
@@ -24,6 +24,9 @@
     },
     {
       'target_name': 'error_dialog',
+      'dependencies': [
+        'user_manager_dialog'
+      ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
@@ -31,6 +34,7 @@
       'dependencies': [
         '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:i18n_behavior',
         'profile_browser_proxy',
+        'user_manager_dialog'
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
@@ -59,6 +63,10 @@
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
+      'target_name': 'user_manager_dialog',

[Moe, 2016/06/03 21:51:50]

Had to remove this target b/c adding the following to the dependencies was
breaking the closure compiler.

'<(DEPTH)/third_party/polymer/v1_0/components-chromium/paper-dialog-behavior/compiled_resources2.gyp:paper-dialog-behavior-extracted',

[Dan Beam, 2016/06/03 22:00:47]

why?  can you paste the error?

it's better to fix the polymer compilation errors than just ... not compile our
code

[Moe, 2016/06/06 16:29:20]

I didn't know we modify the third party Polymer JS code. Should we also always
compile those sources too to prevent such errors?

(ERROR) Error in: iron-overlay-manager-extracted.js
##
/usr/local/google/home/mahmadi/chromium/src/third_party/polymer/v1_0/components-chromium/iron-overlay-behavior/iron-overlay-manager-extracted.js:320:
ERROR - Property _manager never defined on ?
##         if (path[i]._manager === this) {
##                     ^
## 
##
/usr/local/google/home/mahmadi/chromium/src/third_party/polymer/v1_0/components-chromium/iron-overlay-behavior/iron-overlay-manager-extracted.js:377:
ERROR - Property alwaysOnTop never defined on o1
##       return !o1.alwaysOnTop && o2.alwaysOnTop;
##  

you can also run third_party/closure_compiler/run_compiler
paper-dialog-behavior-extracted to reproduce.

+      'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
+    },
+    {
       'target_name': 'user_manager_pages',
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },