Fix inconsistent and incorrect Roboto Medium usage

Fix inconsistent and incorrect Roboto Medium usage                               
                                                                                 
A bunch of places are using sans-serif-medium, which doesn't exist               
before Lollipop.  This means that text that is supposed to be bold               
ends up looking like all of the other text around it.                            
                                                                                 
* Replace users of sans-serif-medium with RobotoMediumStyle, which               
  automatically flips between Roboto Medium and Roboto Bold as the               
  platform allows.                                                               
                                                                                 
* Make everywhere that dynamically builds Typefaces/StyleSpans use               
  a common function in UiUtils, which now references the font name               
  and weight directly so that it's more obvious why it's needed.                 
                                                                                 
* ContextualSearchPromoView no longer tries to change its buttons'               
  fonts, which buttons shouldn't do.                                             
                                                                                 
* Remove the dead NativePageDialog.                                              
                                                                                 
BUG=703968
Review-Url: https://codereview.chromium.org/2962713002
Cr-Commit-Position: refs/heads/master@{#482814}
Committed: https://chromium.googlesource.com/chromium/src/+/0ecc34d1d8105c25cfd423cb21814fcb7e9bc324

[gone, 2017-06-27 21:13:24]

Description was changed from

==========
Remove dead code

Not used anywhere anymore, AFAICT.

BUG=703968
==========

to

==========
Fix inconsistent and incorrect Roboto Medium usage                              

                                                                                

A bunch of places are using sans-serif-medium, which doesn't exist              

before Lollipop.  This means that text that is supposed to be bold              

ends up looking like all of the other text around it.                           

                                                                                

* Replace users of sans-serif-medium with RobotoMediumStyle, which              

  automatically flips between Roboto Medium and Roboto Bold as the              

  platform allows.                                                              

                                                                                

* Make everywhere that dynamically builds Typefaces/StyleSpans use              

  a common function in UiUtils, which now references the font name              

  and weight directly so that it's more obvious why it's needed.                

                                                                                

* ContextualSearchPromoView no longer tries to change its buttons'              

  fonts, which buttons shouldn't do.                                            

                                                                                

* Remove the dead NativePageDialog.                                             

                                                                                

BUG=703968
==========

[gone, 2017-06-27 22:00:37]

dfalcantara@chromium.org changed reviewers:
+ twellington@chromium.org

[gone, 2017-06-27 22:00:37]

Some screenshots are in the bug.

[Theresa, 2017-06-27 22:48:49]

lgtm

[gone, 2017-06-27 22:58:28]

The CQ bit was checked by dfalcantara@chromium.org

[commit-bot: I haz the power, 2017-06-27 22:58:49]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-28 00:20:54]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1498604308778130,
"parent_rev": "60c1155a854f8df1eead65b636bfac07729f85aa", "commit_rev":
"0ecc34d1d8105c25cfd423cb21814fcb7e9bc324"}

[commit-bot: I haz the power, 2017-06-28 00:21:08]

Description was changed from

==========
Fix inconsistent and incorrect Roboto Medium usage                              

                                                                                

A bunch of places are using sans-serif-medium, which doesn't exist              

before Lollipop.  This means that text that is supposed to be bold              

ends up looking like all of the other text around it.                           

                                                                                

* Replace users of sans-serif-medium with RobotoMediumStyle, which              

  automatically flips between Roboto Medium and Roboto Bold as the              

  platform allows.                                                              

                                                                                

* Make everywhere that dynamically builds Typefaces/StyleSpans use              

  a common function in UiUtils, which now references the font name              

  and weight directly so that it's more obvious why it's needed.                

                                                                                

* ContextualSearchPromoView no longer tries to change its buttons'              

  fonts, which buttons shouldn't do.                                            

                                                                                

* Remove the dead NativePageDialog.                                             

                                                                                

BUG=703968
==========

to

==========
Fix inconsistent and incorrect Roboto Medium usage                              

                                                                                

A bunch of places are using sans-serif-medium, which doesn't exist              

before Lollipop.  This means that text that is supposed to be bold              

ends up looking like all of the other text around it.                           

                                                                                

* Replace users of sans-serif-medium with RobotoMediumStyle, which              

  automatically flips between Roboto Medium and Roboto Bold as the              

  platform allows.                                                              

                                                                                

* Make everywhere that dynamically builds Typefaces/StyleSpans use              

  a common function in UiUtils, which now references the font name              

  and weight directly so that it's more obvious why it's needed.                

                                                                                

* ContextualSearchPromoView no longer tries to change its buttons'              

  fonts, which buttons shouldn't do.                                            

                                                                                

* Remove the dead NativePageDialog.                                             

                                                                                

BUG=703968

Review-Url: https://codereview.chromium.org/2962713002
Cr-Commit-Position: refs/heads/master@{#482814}
Committed:
https://chromium.googlesource.com/chromium/src/+/0ecc34d1d8105c25cfd423cb2181...
==========

[commit-bot: I haz the power, 2017-06-28 00:21:11]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/0ecc34d1d8105c25cfd423cb2181...