SettingsProvider: add default overlay entry for SEND_ACTION_APP_ERROR

Add a default entry for Settings.Global.SEND_ACTION_APP_ERROR so that it
can be overlayed elsewhere if needed.

Change-Id: Ieffc2f4a1ad8ad0df04a9e33b575150a680478af
Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:
	packages/SettingsProvider/res/values/defaults.xml
	packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java
Themes: Allow clearing the wallpaper and ls wallpaper

By providing an empty string for the MODS_LAUNCHER and
MODS_LOCKSCREEN components, the theme service will clear out any
existing wallpaper the user had set.  This provides the same
functionality as if the user was picking "No wallpaper" from the
picker.

Change-Id: I0c349ad4afa2bcef2c302105315709786510c0aa
Themes: setUserRequired(false) when updating audibles

This prevents the following exception
F/Environment(18007): Path requests must specify a user by using UserEnvironment
F/Environment(18007): java.lang.Throwable
F/Environment(18007):   at android.os.Environment.throwIfUserRequired(Environment.java:787)

Change-Id: Ic6ac7537079ed27912c40683c877e05992b708e9
Fix camera usage tracking.

When a Camera object is finalized, it notifies the torch service that
it's no longer using the camera. This call used to not check whether the
caller actually is still using the camera and called release() before,
so depending on timing of the finalizer, it could happen that e.g. the
camera app released the camera user record of the torch app, leading to
the torch usage not being detected on next usage of the camera app.

Fix that by checking whether the caller of onCameraClosed() actually
owned the camera prior to releasing the record.
Also fix synchronization between accesses.

Change-Id: Ic01cbc3c89ab8d855e4613bfa1b2f548de919b73
Fix ressource leak in getFileCrC

Change-Id: If8a63fa355664d360aab6ecba92c82cd56b745b8
Make sure ThemeConfig is non-null when loading resources

When the device boots into safemode, the theme config will end up
being null and we need to check that prior to using it to retrieve
resources for the StatusBarIconView

This fixes CYAN-5009

Change-Id: I1a90bc9f9c65cb41a6e58947bbd1b6d7728a952b
Themes: Add ability to apply color filters to composed icons

Themes can include one or more of the following filter tags in
assets/icons/res/xml/appfilter.xml

    <!-- HUE filter
         Integer value between -180 and 180 representing the degree.
         0 = no change
    -->
    <filter name="hue">0</filter>

    <!-- SATURATION filter.
         0 = grayscale, 100 = no change, 200 = over saturated
    -->
    <filter name="saturation">0</filter>

    <!-- BRIGHTNESS filter.
         0 = pitch black, 100 = no change, 200 = 200% brightness
    -->
    <filter name="brightness">100</filter>

    <!-- CONTRAST filter.
         -100 = minimal contrast, 0 = no change, 100 = maximum contrast
    -->
    <filter name="contrast">100</filter>

    <!-- ALPHA filter.
         0 = transparent, 100 = opaque
    -->
    <filter name="alpha">75</filter>

    <!-- INVERT filter.
         Valid values are true or false
         true = invert colors
    -->
    <filter name="invert">false</filter>

    <!-- TINT filter.
         A hexadecimal value representing ARGB
    -->
    <filter name="tint">#ff0000ff</filter>

Change-Id: I2431237dd2766176be16c730020557ce87d623e4