Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/46e5403b509a
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #16063 from davidflanagan/bug942199

Bug 942199: Allow minimum EXIF preview size to be configured at build ti...

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https://hg.mozilla.org/integration/gaia-central/rev/c266b6e2ea0d
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 942199: Allow minimum EXIF preview size to be configured at build time for Camera and Gallery
(cherry picked from commit e439f8630fdea790595efaebab24ec21be6bc0e4)

Conflicts:

	apps/camera/js/filmstrip.js

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "2651e0d87f95bbf027a3f96a505b0777df4134a0", 
+    "revision": "46e5403b509a78f27f4e1866adb860dc2eaf8f40", 
     "repo_path": "/integration/gaia-central"
 }