Move process stats screen into memory screen.

- Move process stats from developer options to top level
   settings item.
 - Some minor UI changes to the top of the page
 - Major UI updates to detail page, now shows info with processes
   as pref categories and services as prefs, with a way to kill
   them (taken from Running Services page).
 - Some major refactorings in code, in attempt to make it more
   usable
 - Added color bar on per app basis to visualize the avg/max
   relationship
 - Updated the way avg is calculated across multiple entries in
   ProcStatsPackageEntry to be more accurate
 - Change the way max memory is calculated in
   ProcStatsPackageEntry to be less accurate but more useful

Bug: 19443802
Change-Id: Ia6aaabe42c415c50997a09bfb814a6f6e5731772

res/drawable/ic_cancel.xml

@@ -0,0 +1,25 @@
+<!--
+    Copyright (C) 2015 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="48.0"
+        android:viewportHeight="48.0">
+
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M24.0,4.0C12.9,4.0 4.0,12.9 4.0,24.0s8.9,20.0 20.0,20.0c11.1,0.0 20.0,-8.9 20.0,-20.0S35.1,4.0 24.0,4.0zM34.0,31.2L31.2,34.0L24.0,26.8L16.8,34.0L14.0,31.2l7.2,-7.2L14.0,16.8l2.8,-2.8l7.2,7.2l7.2,-7.2l2.8,2.8L26.8,24.0L34.0,31.2z"/>
+</vector>

res/drawable/ic_settings_memory.xml

@@ -0,0 +1,37 @@
+<!--
+     Copyright (C) 2015 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="32dp"
+        android:height="32dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:pathData="M6.0,4.0l0.0,16.0 12.0,0.0 0.0,-16.0 -12.0,0.0z
+        M6.0,5.25l0,1.5 -3,0 0,-1.5 3,0z
+        M6.0,9.25l0,1.5 -3,0 0,-1.5 3,0z
+        M6.0,13.25l0,1.5 -3,0 0,-1.5 3,0z
+        M6.0,17.25l0,1.5 -3,0 0,-1.5 3,0z
+        M21.0,5.25l0,1.5 -3,0 0,-1.5 3,0z
+        M21.0,9.25l0,1.5 -3,0 0,-1.5 3,0z
+        M21.0,13.25l0,1.5 -3,0 0,-1.5 3,0z
+        M21.0,17.25l0,1.5 -3,0 0,-1.5 3,0z
+
+        M11.5,14.5l1,0 0,3 -1,0 0,-3z
+        M13.25,14.5l1,0 0,3 -1,0 0,-3z
+        M15.0,14.5l1,0 0,3 -1,0 0,-3z
+        "
+        android:fillColor="#ff009587" />
+</vector>