Add new buttons for video calls.

These are simply hidden for now; behavior needs to be wired up still.
Since it now has so many buttons, I also tried to update and clean
up the comments/arrangement of buttons in call_button_fragment.

Bug: 16014280
Change-Id: If0780bab9de1889d9c4350ffc345c7239cfcc948
diff --git a/InCallUI/res/drawable/btn_change_to_audio.xml b/InCallUI/res/drawable/btn_change_to_audio.xml
new file mode 100644
index 0000000..974dd4a
--- /dev/null
+++ b/InCallUI/res/drawable/btn_change_to_audio.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:drawable="@drawable/btn_background" />
+
+    <item>
+        <bitmap android:src="@drawable/ic_toolbar_audio_phone"
+            android:gravity="center"
+            android:tint="@color/selectable_icon_tint" />
+    </item>
+
+</layer-list>
\ No newline at end of file
diff --git a/InCallUI/res/drawable/btn_change_to_video.xml b/InCallUI/res/drawable/btn_change_to_video.xml
new file mode 100644
index 0000000..255b9b6
--- /dev/null
+++ b/InCallUI/res/drawable/btn_change_to_video.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:drawable="@drawable/btn_background" />
+
+    <item>
+        <bitmap android:src="@drawable/ic_toolbar_video"
+            android:gravity="center"
+            android:tint="@color/selectable_icon_tint" />
+    </item>
+
+</layer-list>
\ No newline at end of file
diff --git a/InCallUI/res/drawable/btn_compound_video_off.xml b/InCallUI/res/drawable/btn_compound_video_off.xml
new file mode 100644
index 0000000..776df50
--- /dev/null
+++ b/InCallUI/res/drawable/btn_compound_video_off.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<!-- Layers used to render the in-call "Mute" compound button. -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- The standard "compound button" background. -->
+    <item android:drawable="@drawable/btn_compound_background" />
+
+    <!-- Use an explicit <bitmap> to avoid scaling the icon up to the full size of the button. -->
+    <item>
+        <bitmap android:src="@drawable/ic_toolbar_video_off"
+            android:gravity="center"
+            android:tint="@color/selectable_icon_tint" />
+    </item>
+
+</layer-list>
diff --git a/InCallUI/res/drawable/btn_compound_video_switch.xml b/InCallUI/res/drawable/btn_compound_video_switch.xml
new file mode 100644
index 0000000..aa14593
--- /dev/null
+++ b/InCallUI/res/drawable/btn_compound_video_switch.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<!-- Layers used to render the in-call "Mute" compound button. -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- The standard "compound button" background. -->
+    <item android:drawable="@drawable/btn_compound_background" />
+
+    <!-- Use an explicit <bitmap> to avoid scaling the icon up to the full size of the button. -->
+    <item>
+        <bitmap android:src="@drawable/ic_toolbar_video_switch"
+            android:gravity="center"
+            android:tint="@color/selectable_icon_tint" />
+    </item>
+
+</layer-list>
diff --git a/InCallUI/res/drawable/btn_overflow.xml b/InCallUI/res/drawable/btn_overflow.xml
new file mode 100644
index 0000000..e851ece
--- /dev/null
+++ b/InCallUI/res/drawable/btn_overflow.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:drawable="@drawable/btn_background" />
+
+    <item>
+        <bitmap android:src="@drawable/ic_overflow_menu"
+            android:gravity="center"
+            android:tint="@color/selectable_icon_tint" />
+    </item>
+
+</layer-list>
\ No newline at end of file