Add BitmapImage hasColorProfile() method

Add a bitmap image method that reports if the image has a color
profile. No change in behavior so no new layout tests. Add unit
tests for the hasColorProfile() case, wrapped with USE(QCMSLIB)
guards so they only run on ports that support color profiles.

TEST=webkit_unit_test --gtest_filter="BitmapImage*ColorProfile"
BUG=368655

Review URL: https://codereview.chromium.org/251143002

git-svn-id: svn://svn.chromium.org/blink/trunk@173155 bbb929c8-8fbe-4397-9dbb-9b2b20218538