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/darwin_amd64.m

-// 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 darwin
-
-#include "_cgo_export.h"
-#include <pthread.h>
-#include <stdio.h>
-
-#import <Cocoa/Cocoa.h>
-#import <Foundation/Foundation.h>
-#import <OpenGL/gl.h>
-#import <QuartzCore/CVReturn.h>
-#import <QuartzCore/CVBase.h>
-
-static CVReturn displayLinkDraw(CVDisplayLinkRef displayLink, const CVTimeStamp* now, const CVTimeStamp* outputTime, CVOptionFlags flagsIn, CVOptionFlags* flagsOut, void* displayLinkContext)
-{
-        NSOpenGLView* view = displayLinkContext;
-        NSOpenGLContext *currentContext = [view openGLContext];
-        drawgl((GLintptr)currentContext);
-        return kCVReturnSuccess;
-}
-
-void lockContext(GLintptr context) {
-        NSOpenGLContext* ctx = (NSOpenGLContext*)context;
-        [ctx makeCurrentContext];
-        CGLLockContext([ctx CGLContextObj]);
-}
-
-void unlockContext(GLintptr context) {
-        NSOpenGLContext* ctx = (NSOpenGLContext*)context;
-        [ctx flushBuffer];
-        CGLUnlockContext([ctx CGLContextObj]);
-
-}
-
-uint64 threadID() {
-        uint64 id;
-        if (pthread_threadid_np(pthread_self(), &id)) {
-                abort();
-        }
-        return id;
-}
-
-
-@interface MobileGLView : NSOpenGLView
-{
-        CVDisplayLinkRef displayLink;
-}
-@end
-
-@implementation MobileGLView
-- (void)prepareOpenGL {
-        [self setWantsBestResolutionOpenGLSurface:YES];
-        GLint swapInt = 1;
-        [[self openGLContext] setValues:&swapInt forParameter:NSOpenGLCPSwapInterval];
-
-        CVDisplayLinkCreateWithActiveCGDisplays(&displayLink);
-        CVDisplayLinkSetOutputCallback(displayLink, &displayLinkDraw, self);
-
-        CGLContextObj cglContext = [[self openGLContext] CGLContextObj];
-        CGLPixelFormatObj cglPixelFormat = [[self pixelFormat] CGLPixelFormatObj];
-        CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext(displayLink, cglContext, cglPixelFormat);
-        CVDisplayLinkStart(displayLink);
-}
-
-- (void)reshape {
-        // Calculate screen PPI.
-        //
-        // Note that the backingScaleFactor converts from logical
-        // pixels to actual pixels, but both of these units vary
-        // independently from real world size. E.g.
-        //
-        // 13" Retina Macbook Pro, 2560x1600, 227ppi, backingScaleFactor=2, scale=3.15
-        // 15" Retina Macbook Pro, 2880x1800, 220ppi, backingScaleFactor=2, scale=3.06
-        // 27" iMac,               2560x1440, 109ppi, backingScaleFactor=1, scale=1.51
-        // 27" Retina iMac,        5120x2880, 218ppi, backingScaleFactor=2, scale=3.03
-        NSScreen *screen = [NSScreen mainScreen];
-        double screenPixW = [screen frame].size.width * [screen backingScaleFactor];
-
-        CGDirectDisplayID display = (CGDirectDisplayID)[[[screen deviceDescription] valueForKey:@"NSScreenNumber"] intValue];
-        CGSize screenSizeMM = CGDisplayScreenSize(display); // in millimeters
-        float ppi = 25.4 * screenPixW / screenSizeMM.width;
-        float pixelsPerPt = ppi/72.0;
-
-        // The width and height reported to the geom package are the
-        // bounds of the OpenGL view. Several steps are necessary.
-        // First, [self bounds] gives us the number of logical pixels
-        // in the view. Multiplying this by the backingScaleFactor
-        // gives us the number of actual pixels.
-        NSRect r = [self bounds];
-        int w = r.size.width * [screen backingScaleFactor];
-        int h = r.size.height * [screen backingScaleFactor];
-
-        setGeom(pixelsPerPt, w, h);
-}
-
-- (void)mouseDown:(NSEvent *)theEvent {
-        double scale = [[NSScreen mainScreen] backingScaleFactor];
-        NSPoint p = [theEvent locationInWindow];
-        eventMouseDown(p.x * scale, p.y * scale);
-}
-
-- (void)mouseUp:(NSEvent *)theEvent {
-        double scale = [[NSScreen mainScreen] backingScaleFactor];
-        NSPoint p = [theEvent locationInWindow];
-        eventMouseEnd(p.x * scale, p.y * scale);
-}
-
-- (void)mouseDragged:(NSEvent *)theEvent {
-        double scale = [[NSScreen mainScreen] backingScaleFactor];
-        NSPoint p = [theEvent locationInWindow];
-        eventMouseDragged(p.x * scale, p.y * scale);
-}
-@end
-
-void
-runApp(void) {
-        [NSAutoreleasePool new];
-        [NSApplication sharedApplication];
-        [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
-
-        id menuBar = [[NSMenu new] autorelease];
-        id menuItem = [[NSMenuItem new] autorelease];
-        [menuBar addItem:menuItem];
-        [NSApp setMainMenu:menuBar];
-
-        id menu = [[NSMenu new] autorelease];
-        id name = [[NSProcessInfo processInfo] processName];
-        id quitMenuItem = [[[NSMenuItem alloc] initWithTitle:@"Quit"
-                action:@selector(terminate:) keyEquivalent:@"q"]
-                autorelease];
-        [menu addItem:quitMenuItem];
-        [menuItem setSubmenu:menu];
-
-        NSRect rect = NSMakeRect(0, 0, 400, 400);
-
-        id window = [[[NSWindow alloc] initWithContentRect:rect
-                        styleMask:NSTitledWindowMask
-                        backing:NSBackingStoreBuffered
-                        defer:NO]
-                autorelease];
-        [window setStyleMask:[window styleMask] | NSResizableWindowMask];
-        [window cascadeTopLeftFromPoint:NSMakePoint(20,20)];
-        [window makeKeyAndOrderFront:nil];
-        [window setTitle:name];
-
-        NSOpenGLPixelFormatAttribute attr[] = {
-                NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core,
-                NSOpenGLPFAColorSize,     24,
-                NSOpenGLPFAAlphaSize,     8,
-                NSOpenGLPFADepthSize,     16,
-                NSOpenGLPFAAccelerated,
-                NSOpenGLPFADoubleBuffer,
-                0
-        };
-        id pixFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attr];
-        id view = [[MobileGLView alloc] initWithFrame:rect pixelFormat:pixFormat];
-        [window setContentView:view];
-
-        [NSApp activateIgnoringOtherApps:YES];
-        [NSApp run];
-}