diff --git a/include/batteryservice/BatteryService.h b/include/batteryservice/BatteryService.h
index 855262b..829061a 100644
--- a/include/batteryservice/BatteryService.h
+++ b/include/batteryservice/BatteryService.h
@@ -52,6 +52,8 @@
     bool batteryPresent;
     int batteryLevel;
     int batteryVoltage;
+    int batteryCurrentNow;
+    int batteryChargeCounter;
     int batteryTemperature;
     String8 batteryTechnology;
 
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index 6dfd306..8a0522e 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -59,16 +59,24 @@
 };
 
 /*
- * This is the list of EGL extensions exposed to applications,
- * some of them are mandatory because used by the ANDROID system.
+ * This is the list of EGL extensions exposed to applications.
  *
- * Mandatory extensions are required per the CDD and not explicitly
- * checked during EGL initialization. the system *assumes* these extensions
- * are present. the system may not function properly if some mandatory
- * extensions are missing.
+ * Some of them (gBuiltinExtensionString) are implemented entirely in this EGL
+ * wrapper and are always available.
  *
- * NOTE: gExtensionString MUST have a single space as the last character.
+ * The rest (gExtensionString) depend on support in the EGL driver, and are
+ * only available if the driver supports them. However, some of these must be
+ * supported because they are used by the Android system itself; these are
+ * listd as mandatory below and are required by the CDD. The system *assumes*
+ * the mandatory extensions are present and may not function properly if some
+ * are missing.
+ *
+ * NOTE: Both strings MUST have a single space as the last character.
  */
+extern char const * const gBuiltinExtensionString =
+        "EGL_KHR_get_all_proc_addresses "
+        "EGL_ANDROID_presentation_time "
+        ;
 extern char const * const gExtensionString  =
         "EGL_KHR_image "                        // mandatory
         "EGL_KHR_image_base "                   // mandatory
@@ -84,7 +92,6 @@
         "EGL_NV_system_time "
         "EGL_ANDROID_image_native_buffer "      // mandatory
         "EGL_KHR_wait_sync "                    // strongly recommended
-        "EGL_ANDROID_presentation_time "
         ;
 
 // extensions not exposed to applications but used by the ANDROID system
diff --git a/opengl/libs/EGL/egl_display.cpp b/opengl/libs/EGL/egl_display.cpp
index 1955904..8d7890b 100644
--- a/opengl/libs/EGL/egl_display.cpp
+++ b/opengl/libs/EGL/egl_display.cpp
@@ -1,16 +1,16 @@
-/* 
+/*
  ** Copyright 2007, 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 
+ ** 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 
+ **     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 
+ ** 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.
  */
 
@@ -35,6 +35,7 @@
 static char const * const sVersionString    = "1.4 Android META-EGL";
 static char const * const sClientApiString  = "OpenGL_ES";
 
+extern char const * const gBuiltinExtensionString;
 extern char const * const gExtensionString;
 
 extern void initEglTraceLevel();
@@ -183,7 +184,7 @@
     mVersionString.setTo(sVersionString);
     mClientApiString.setTo(sClientApiString);
 
-    // we only add extensions that exist in the implementation
+    mExtensionString.setTo(gBuiltinExtensionString);
     char const* start = gExtensionString;
     char const* end;
     do {
diff --git a/services/batteryservice/BatteryProperties.cpp b/services/batteryservice/BatteryProperties.cpp
index ab636a9..e4a42ed 100644
--- a/services/batteryservice/BatteryProperties.cpp
+++ b/services/batteryservice/BatteryProperties.cpp
@@ -38,6 +38,8 @@
     batteryPresent = p->readInt32() == 1 ? true : false;
     batteryLevel = p->readInt32();
     batteryVoltage = p->readInt32();
+    batteryCurrentNow = p->readInt32();
+    batteryChargeCounter = p->readInt32();
     batteryTemperature = p->readInt32();
     batteryTechnology = String8((p->readString16()).string());
     return OK;
@@ -52,6 +54,8 @@
     p->writeInt32(batteryPresent ? 1 : 0);
     p->writeInt32(batteryLevel);
     p->writeInt32(batteryVoltage);
+    p->writeInt32(batteryCurrentNow);
+    p->writeInt32(batteryChargeCounter);
     p->writeInt32(batteryTemperature);
     p->writeString16(String16(batteryTechnology));
     return OK;
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index 391131d..8143227 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -64,7 +64,6 @@
       mDisplaySurface(displaySurface),
       mDisplay(EGL_NO_DISPLAY),
       mSurface(EGL_NO_SURFACE),
-      mContext(EGL_NO_CONTEXT),
       mDisplayWidth(), mDisplayHeight(), mFormat(),
       mFlags(),
       mPageFlipCount(),
@@ -80,6 +79,16 @@
     int format;
     window->query(window, NATIVE_WINDOW_FORMAT, &format);
 
+    // Make sure that composition can never be stalled by a virtual display
+    // consumer that isn't processing buffers fast enough. We have to do this
+    // in two places:
+    // * Here, in case the display is composed entirely by HWC.
+    // * In makeCurrent(), using eglSwapInterval. Some EGL drivers set the
+    //   window's swap interval in eglMakeCurrent, so they'll override the
+    //   interval we set here.
+    if (mType >= DisplayDevice::DISPLAY_VIRTUAL)
+        window->setSwapInterval(window, 0);
+
     /*
      * Create our display's surface
      */
@@ -254,6 +263,8 @@
     if (sur != mSurface) {
         result = eglMakeCurrent(dpy, mSurface, mSurface, ctx);
         if (result == EGL_TRUE) {
+            if (mType >= DisplayDevice::DISPLAY_VIRTUAL)
+                eglSwapInterval(dpy, 0);
             setViewportAndProjection();
         }
     }
diff --git a/services/surfaceflinger/DisplayDevice.h b/services/surfaceflinger/DisplayDevice.h
index ecf855a..6f0ce88 100644
--- a/services/surfaceflinger/DisplayDevice.h
+++ b/services/surfaceflinger/DisplayDevice.h
@@ -171,7 +171,6 @@
 
     EGLDisplay      mDisplay;
     EGLSurface      mSurface;
-    EGLContext      mContext;
     int             mDisplayWidth;
     int             mDisplayHeight;
     PixelFormat     mFormat;