Add initial GpuMemoryBufferSurfaceTexture implementation.

content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java

Index: content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java b/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
index d44163fa12cadfae7b9d276501a2452fb8b0e145..f588d26f050c191ba0a9865d44a002c8b4652eea 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
@@ -423,6 +423,16 @@ public class ChildProcessLauncher {
 
                 return nativeGetViewSurface(surfaceId);
             }
+
+            @Override
+            public Surface getSurfaceTextureSurface(int surfaceTextureId) {
+                if (callbackType != CALLBACK_FOR_RENDERER_PROCESS) {
+                    Log.e(TAG, "Illegal callback for non-renderer process.");
+                    return null;
+                }
+
+                return nativeGetSurfaceTextureSurface(surfaceTextureId);
+            }
         };
     }
 
@@ -435,6 +445,7 @@ public class ChildProcessLauncher {
 
     private static native void nativeOnChildProcessStarted(long clientContext, int pid);
     private static native Surface nativeGetViewSurface(int surfaceId);
+    private static native Surface nativeGetSurfaceTextureSurface(int surfaceTextureId);
     private static native void nativeEstablishSurfacePeer(
             int pid, Surface surface, int primaryID, int secondaryID);
     private static native boolean nativeIsSingleProcess();