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

Index: third_party/go/src/golang.org/x/mobile/app/darwin_amd64.m
diff --git a/third_party/go/src/golang.org/x/mobile/app/darwin_amd64.m b/third_party/go/src/golang.org/x/mobile/app/darwin_amd64.m
deleted file mode 100644
index e8517f28cc37da5314e492d724628a0b8eea16dd..0000000000000000000000000000000000000000
--- a/third_party/go/src/golang.org/x/mobile/app/darwin_amd64.m
+++ /dev/null
@@ -1,164 +0,0 @@
-// 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];
-}