Allow extensions to remove and override the bookmark shortcut key

This feature is enabled for dev behind the
--enable-override-bookmarks-ui=1 feature flag, and for all releases for
internal bookmarks extensions.

Implements the shortcut key aspect of the
Remove Bookmark Shortcut Chrome API proposal:
https://docs.google.com/a/chromium.org/document/d/1C2Mle92O9uGlji5y5gGDM5tNJ_tVE1Vb-2xgsZPNDTk

BUG=335655
R=erg@chromium.org, finnur@chromium.org, shess@chromium.org, sky@chromium.org

Review URL: https://codereview.chromium.org/143493005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251368 0039d316-1c4b-4281-b951-d872f2087c98
Revert 250500 "Add quotes around executable pathes in the mini i..."

Speculative revert to see if this resolves a spike in update failures on
canary.

> Add quotes around executable pathes in the mini installer
> 
> BUG=340387
> TEST=N/A
> 
> Review URL: https://codereview.chromium.org/154113004

TBR=cdn@chromium.org

Review URL: https://codereview.chromium.org/167333002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251369 0039d316-1c4b-4281-b951-d872f2087c98
We should not be sending a WM_MOUSELEAVE to the parent from the LegacyRenderWidgetHostHWND class when the parent has capture.

The LegacyRenderWidgetHostHWND class tracks WM_MOUSEMOVES to inform the parent when the mouse cursor moves outside the
bounds of the parent window. When the parent sets capture, Windows sends us a WM_MOUSELEAVE message. We should be ignoring this.

BUG=343844
R=sky@chromium.org
TBR=cpu

Review URL: https://codereview.chromium.org/166163004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251370 0039d316-1c4b-4281-b951-d872f2087c98
Use ScopedNestedTaskAllower instead of background thread for print dialog

Tasks need to be processed for painting to occur in other browser
windows while the modal dialog is up in Aura.

R=vitalybuka@chromium.org
BUG=342697,180997,343848

Review URL: https://codereview.chromium.org/164303002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251373 0039d316-1c4b-4281-b951-d872f2087c98
LKGR w/ DEPS up to revision 251373