Exclude Feedback dialog strings for platforms that don't have extensions.

IDS_FEEDBACK_* strings are only used in:
chrome/browser/extensions/api/feedback_private/feedback_private_api.cc

Platforms such as Android do not need these strings.

BUG=326023

Review URL: https://codereview.chromium.org/141843004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247423 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247423
Moving WallpaperManager and FileBrowser strings to chromeos_strings.grdp

WallpaperManager and FileBrowser are only used by ChromeOS and should
only be included in ChromeOS builds.

IDS_FILE_BROWSER_* are used in chrome/browser/chromeos/extensions/file_manager
IDS_WALLPAPER_MANAGER_* are used in
chrome/browser/chromeos/extensions/wallpaper_private_api.cc

BUG=326023
NOTRY=true

Review URL: https://codereview.chromium.org/147333006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247424 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247424
Improves the performance when dragging a v2 app window.

Makes views::LabelButton not create a new font list at every call to GetPreferredSize().  It's really inefficient.  Caches both of bold and normal style of the specified font list.

BUG=332648
TEST=Done manually with "Files" application (v2 app) on "Chrome" build (built from internal repository, which specifies a different font list from one on Chromium build).

Review URL: https://codereview.chromium.org/143053002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247425 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247425