[Cronet] Build static libcronet.a for iOS with complete dependencies.

components/cronet/ios/sample/cronet_sample_view_controller.m

Index: components/cronet/ios/sample/cronet_sample_view_controller.m
diff --git a/components/cronet/ios/sample/cronet_sample_view_controller.m b/components/cronet/ios/sample/cronet_sample_view_controller.m
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+++ b/components/cronet/ios/sample/cronet_sample_view_controller.m
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+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "cronet_sample_view_controller.h"
+
+#import "components/cronet/ios/Cronet.h"
+
+@implementation CronetSampleViewController {
+  UIWebView* _webView;
+}
+
+- (void)viewDidLoad {
+  self.view.backgroundColor = [UIColor whiteColor];
+
+  UIButton* button = [UIButton buttonWithType:UIButtonTypeSystem];
+  [button setTitle:@"chromium.org" forState:UIControlStateNormal];
+  [button setFrame:CGRectMake(5, 0, 95, 50)];
+  [button addTarget:self
+                action:@selector(loadChromium)
+      forControlEvents:UIControlEventTouchUpInside];
+  [self.view addSubview:button];
+
+  _webView = [[UIWebView alloc]
+      initWithFrame:CGRectMake(0, 52, self.view.bounds.size.width,
+                               self.view.bounds.size.height - 52)];
+  [self.view addSubview:_webView];
+  _webView.autoresizingMask =
+      UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+
+  [self loadChromium];
+}
+
+// Disable the status bar to sidestep all the iOS7 status bar issues.
+- (BOOL)prefersStatusBarHidden {
+  return YES;
+}
+
+- (void)loadChromium {
+  [_webView
+      loadRequest:[NSURLRequest
+                      requestWithURL:
+                          [NSURL URLWithString:@"https://www.chromium.org"]]];
+}
+
+@end