Automatic iOS signing instead of the manual one (#160)

This would allow running the app on an iPhone without extra Xcode
setup, and therefore allows the device lab to automatically benchmark
the app on iOS.

Former-commit-id: 62e633b9e9360ee57dafaaeabbb7fbf85e7642d1
diff --git a/ios/Runner.xcodeproj/project.pbxproj b/ios/Runner.xcodeproj/project.pbxproj
index 96e9b46..b639736 100644
--- a/ios/Runner.xcodeproj/project.pbxproj
+++ b/ios/Runner.xcodeproj/project.pbxproj
@@ -362,9 +362,8 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CODE_SIGN_STYLE = Manual;
+                                "CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = "";
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -501,9 +500,8 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CODE_SIGN_STYLE = Manual;
+                                "CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = "";
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -534,9 +532,8 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				CODE_SIGN_STYLE = Manual;
+                                "CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = "";
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",