Chromecast: removes android:permission="INTERNET" from manifest.

android:permission puts a restriction on launching the activity such
that the launching context must have INTERNET permission. This is
not true launching via "am" on non-rooted devices, and makes no sense
for the public CastShellApk.

R=byungchul@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/615923003

Cr-Commit-Position: refs/heads/master@{#297462}

chromecast/shell/android/apk/AndroidManifest.xml

@@ -21,8 +21,7 @@
                   android:taskAffinity=".CastShellActivity"
                   android:configChanges="orientation|keyboardHidden|keyboard|screenSize"
                   android:excludeFromRecents="true"
-                  android:noHistory="true"
-                  android:permission="android.permission.INTERNET">
+                  android:noHistory="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>