Remove third_party/golang.org/x/mobile as it is no longer used with Go 1.5.

third_party/go/src/golang.org/x/mobile/app/app.go

-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build linux darwin
-
-package app
-
-import (
-        "io"
-
-        "golang.org/x/mobile/event"
-)
-
-// Run starts the app.
-//
-// It must be called directly from the main function and will
-// block until the app exits.
-func Run(cb Callbacks) {
-        run(cb)
-}
-
-// Callbacks is the set of functions called by the app.
-type Callbacks struct {
-        // Start is called when the app enters the foreground.
-        // The app will start receiving Draw and Touch calls.
-        //
-        // If the app is responsible for the screen (that is, it is an
-        // all-Go app), then Window geometry will be configured and an
-        // OpenGL context will be available during Start.
-        //
-        // If this is a library, Start will be called before the
-        // app is told that Go has finished initialization.
-        //
-        // Start is an equivalent lifecycle state to onStart() on
-        // Android and applicationDidBecomeActive on iOS.
-        Start func()
-
-        // Stop is called shortly before a program is suspended.
-        //
-        // When Stop is received, the app is no longer visible and not is
-        // receiving events. It should:
-        //
-        //      - Save any state the user expects saved (for example text).
-        //      - Release all resources that are not needed.
-        //
-        // Execution time in the stop state is limited, and the limit is
-        // enforced by the operating system. Stop as quickly as you can.
-        //
-        // An app that is stopped may be started again. For example, the user
-        // opens Recent Apps and switches to your app. A stopped app may also
-        // be terminated by the operating system with no further warning.
-        //
-        // Stop is equivalent to onStop() on Android and
-        // applicationDidEnterBackground on iOS.
-        Stop func()
-
-        // Draw is called by the render loop to draw the screen.
-        //
-        // Drawing is done into a framebuffer, which is then swapped onto the
-        // screen when Draw returns. It is called 60 times a second.
-        Draw func()
-
-        // Touch is called by the app when a touch event occurs.
-        Touch func(event.Touch)
-}
-
-// Open opens a named asset.
-//
-// On Android, assets are accessed via android.content.res.AssetManager.
-// These files are stored in the assets/ directory of the app. Any raw asset
-// can be accessed by its direct relative name. For example assets/img.png
-// can be opened with Open("img.png").
-//
-// On iOS an asset is a resource stored in the application bundle.
-// Resources can be loaded using the same relative paths.
-//
-// For consistency when debugging on a desktop, assets are read from a
-// directoy named assets under the current working directory.
-func Open(name string) (ReadSeekCloser, error) {
-        return openAsset(name)
-}
-
-// ReadSeekCloser is an io.ReadSeeker and io.Closer.
-type ReadSeekCloser interface {
-        io.ReadSeeker
-        io.Closer
-}
-
-// State is global application-specific state.
-//
-// The State variable also holds operating system specific state.
-// Android apps have the extra methods:
-//
-//      // JavaVM returns a JNI *JavaVM.
-//      JavaVM() unsafe.Pointer
-//
-//      // AndroidContext returns a jobject for the app android.context.Context.
-//      AndroidContext() unsafe.Pointer
-//
-// State is not valid until Run has been called.
-var State interface{}