Adds the OCHamcrest library to the iOS build.

ios/third_party/ochamcrest/BUILD.gn

Index: ios/third_party/ochamcrest/BUILD.gn
diff --git a/ios/third_party/ochamcrest/BUILD.gn b/ios/third_party/ochamcrest/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..28c1795cfe45492ad4e71048c7d5d7f8a521068a
--- /dev/null
+++ b/ios/third_party/ochamcrest/BUILD.gn
@@ -0,0 +1,205 @@
+# Copyright 2016 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.
+
+# OCHamcrest sources contains import rules using relative file names
+# ("HCAssertThat.h") and other using paths in an installed framework
+# (<OCHamcrest/HCMatcher.h>). In order to build, copy all the sources
+# to <(SHARED_INTERMEDIATE_DIR)/ios/third_party/ochmacrest/OCHamcrest
+# so that both type of import work (another option considered was to
+# build forwarding headers but this required duplicating the list of
+# files in GN build and was ruled out).
+#
+# To avoid ODR violation, direct import of ios/third_party/ochamcrest
+# is forbidden in ios/DEPS and code should instead use import as if
+# OCHamcrest was in a framework (i.e. #import <OCHamcrest/OCHamcrest.h>).
+copy("ochamcrest_copy_files") {
+  testonly = true
+  visibility = [ ":ochamcrest" ]
+  sources = [
+    "src/Source/Core/HCAssertThat.h",
+    "src/Source/Core/HCAssertThat.m",
+    "src/Source/Core/HCBaseDescription.h",
+    "src/Source/Core/HCBaseDescription.m",
+    "src/Source/Core/HCBaseMatcher.h",
+    "src/Source/Core/HCBaseMatcher.m",
+    "src/Source/Core/HCDescription.h",
+    "src/Source/Core/HCDiagnosingMatcher.h",
+    "src/Source/Core/HCDiagnosingMatcher.m",
+    "src/Source/Core/HCMatcher.h",
+    "src/Source/Core/HCSelfDescribing.h",
+    "src/Source/Core/HCStringDescription.h",
+    "src/Source/Core/HCStringDescription.m",
+    "src/Source/Core/Helpers/HCCollect.h",
+    "src/Source/Core/Helpers/HCCollect.m",
+    "src/Source/Core/Helpers/HCInvocationMatcher.h",
+    "src/Source/Core/Helpers/HCInvocationMatcher.m",
+    "src/Source/Core/Helpers/HCRequireNonNilObject.h",
+    "src/Source/Core/Helpers/HCRequireNonNilObject.m",
+    "src/Source/Core/Helpers/HCWrapInMatcher.h",
+    "src/Source/Core/Helpers/HCWrapInMatcher.m",
+    "src/Source/Core/Helpers/NSInvocation+OCHamcrest.h",
+    "src/Source/Core/Helpers/NSInvocation+OCHamcrest.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCBoolReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCBoolReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCCharReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCCharReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCDoubleReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCDoubleReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCFloatReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCFloatReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCIntReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCIntReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCLongLongReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCLongLongReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCLongReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCLongReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCObjectReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCObjectReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCReturnTypeHandlerChain.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCReturnTypeHandlerChain.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCReturnValueGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCReturnValueGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCShortReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCShortReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedCharReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedCharReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedIntReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedIntReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedLongLongReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedLongLongReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedLongReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedLongReturnGetter.m",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedShortReturnGetter.h",
+    "src/Source/Core/Helpers/ReturnValueGetters/HCUnsignedShortReturnGetter.m",
+    "src/Source/Core/Helpers/TestFailureReporters/HCGenericTestFailureReporter.h",
+    "src/Source/Core/Helpers/TestFailureReporters/HCGenericTestFailureReporter.m",
+    "src/Source/Core/Helpers/TestFailureReporters/HCSenTestFailureReporter.h",
+    "src/Source/Core/Helpers/TestFailureReporters/HCSenTestFailureReporter.m",
+    "src/Source/Core/Helpers/TestFailureReporters/HCTestFailure.h",
+    "src/Source/Core/Helpers/TestFailureReporters/HCTestFailure.m",
+    "src/Source/Core/Helpers/TestFailureReporters/HCTestFailureReporter.h",
+    "src/Source/Core/Helpers/TestFailureReporters/HCTestFailureReporter.m",
+    "src/Source/Core/Helpers/TestFailureReporters/HCTestFailureReporterChain.h",
+    "src/Source/Core/Helpers/TestFailureReporters/HCTestFailureReporterChain.m",
+    "src/Source/Core/Helpers/TestFailureReporters/HCXCTestFailureReporter.h",
+    "src/Source/Core/Helpers/TestFailureReporters/HCXCTestFailureReporter.m",
+    "src/Source/Library/Collection/HCEvery.h",
+    "src/Source/Library/Collection/HCEvery.m",
+    "src/Source/Library/Collection/HCHasCount.h",
+    "src/Source/Library/Collection/HCHasCount.m",
+    "src/Source/Library/Collection/HCIsCollectionContaining.h",
+    "src/Source/Library/Collection/HCIsCollectionContaining.m",
+    "src/Source/Library/Collection/HCIsCollectionContainingInAnyOrder.h",
+    "src/Source/Library/Collection/HCIsCollectionContainingInAnyOrder.m",
+    "src/Source/Library/Collection/HCIsCollectionContainingInOrder.h",
+    "src/Source/Library/Collection/HCIsCollectionContainingInOrder.m",
+    "src/Source/Library/Collection/HCIsCollectionContainingInRelativeOrder.h",
+    "src/Source/Library/Collection/HCIsCollectionContainingInRelativeOrder.m",
+    "src/Source/Library/Collection/HCIsCollectionOnlyContaining.h",
+    "src/Source/Library/Collection/HCIsCollectionOnlyContaining.m",
+    "src/Source/Library/Collection/HCIsDictionaryContaining.h",
+    "src/Source/Library/Collection/HCIsDictionaryContaining.m",
+    "src/Source/Library/Collection/HCIsDictionaryContainingEntries.h",
+    "src/Source/Library/Collection/HCIsDictionaryContainingEntries.m",
+    "src/Source/Library/Collection/HCIsDictionaryContainingKey.h",
+    "src/Source/Library/Collection/HCIsDictionaryContainingKey.m",
+    "src/Source/Library/Collection/HCIsDictionaryContainingValue.h",
+    "src/Source/Library/Collection/HCIsDictionaryContainingValue.m",
+    "src/Source/Library/Collection/HCIsEmptyCollection.h",
+    "src/Source/Library/Collection/HCIsEmptyCollection.m",
+    "src/Source/Library/Collection/HCIsIn.h",
+    "src/Source/Library/Collection/HCIsIn.m",
+    "src/Source/Library/Decorator/HCDescribedAs.h",
+    "src/Source/Library/Decorator/HCDescribedAs.m",
+    "src/Source/Library/Decorator/HCIs.h",
+    "src/Source/Library/Decorator/HCIs.m",
+    "src/Source/Library/Logical/HCAllOf.h",
+    "src/Source/Library/Logical/HCAllOf.m",
+    "src/Source/Library/Logical/HCAnyOf.h",
+    "src/Source/Library/Logical/HCAnyOf.m",
+    "src/Source/Library/Logical/HCIsAnything.h",
+    "src/Source/Library/Logical/HCIsAnything.m",
+    "src/Source/Library/Logical/HCIsNot.h",
+    "src/Source/Library/Logical/HCIsNot.m",
+    "src/Source/Library/Number/HCIsCloseTo.h",
+    "src/Source/Library/Number/HCIsCloseTo.m",
+    "src/Source/Library/Number/HCIsEqualToNumber.h",
+    "src/Source/Library/Number/HCIsEqualToNumber.m",
+    "src/Source/Library/Number/HCIsTrueFalse.h",
+    "src/Source/Library/Number/HCIsTrueFalse.m",
+    "src/Source/Library/Number/HCNumberAssert.h",
+    "src/Source/Library/Number/HCNumberAssert.m",
+    "src/Source/Library/Number/HCOrderingComparison.h",
+    "src/Source/Library/Number/HCOrderingComparison.m",
+    "src/Source/Library/Object/HCArgumentCaptor.h",
+    "src/Source/Library/Object/HCArgumentCaptor.m",
+    "src/Source/Library/Object/HCClassMatcher.h",
+    "src/Source/Library/Object/HCClassMatcher.m",
+    "src/Source/Library/Object/HCConformsToProtocol.h",
+    "src/Source/Library/Object/HCConformsToProtocol.m",
+    "src/Source/Library/Object/HCHasDescription.h",
+    "src/Source/Library/Object/HCHasDescription.m",
+    "src/Source/Library/Object/HCHasProperty.h",
+    "src/Source/Library/Object/HCHasProperty.m",
+    "src/Source/Library/Object/HCIsEqual.h",
+    "src/Source/Library/Object/HCIsEqual.m",
+    "src/Source/Library/Object/HCIsInstanceOf.h",
+    "src/Source/Library/Object/HCIsInstanceOf.m",
+    "src/Source/Library/Object/HCIsNil.h",
+    "src/Source/Library/Object/HCIsNil.m",
+    "src/Source/Library/Object/HCIsSame.h",
+    "src/Source/Library/Object/HCIsSame.m",
+    "src/Source/Library/Object/HCIsTypeOf.h",
+    "src/Source/Library/Object/HCIsTypeOf.m",
+    "src/Source/Library/Object/HCThrowsException.h",
+    "src/Source/Library/Object/HCThrowsException.m",
+    "src/Source/Library/Text/HCIsEqualIgnoringCase.h",
+    "src/Source/Library/Text/HCIsEqualIgnoringCase.m",
+    "src/Source/Library/Text/HCIsEqualIgnoringWhiteSpace.h",
+    "src/Source/Library/Text/HCIsEqualIgnoringWhiteSpace.m",
+    "src/Source/Library/Text/HCStringContains.h",
+    "src/Source/Library/Text/HCStringContains.m",
+    "src/Source/Library/Text/HCStringContainsInOrder.h",
+    "src/Source/Library/Text/HCStringContainsInOrder.m",
+    "src/Source/Library/Text/HCStringEndsWith.h",
+    "src/Source/Library/Text/HCStringEndsWith.m",
+    "src/Source/Library/Text/HCStringStartsWith.h",
+    "src/Source/Library/Text/HCStringStartsWith.m",
+    "src/Source/Library/Text/HCSubstringMatcher.h",
+    "src/Source/Library/Text/HCSubstringMatcher.m",
+    "src/Source/OCHamcrest.h",
+  ]
+  outputs = [
+    "$root_gen_dir/ios/third_party/ochamcrest/OCHamcrest/{{source_file_part}}",
+  ]
+}
+
+config("ochamcrest_config") {
+  visibility = [ ":ochamcrest" ]
+  libs = [ "XCTest.framework" ]
+  include_dirs = [ "$root_gen_dir/ios/third_party/ochamcrest" ]
+}
+
+config("ochamcrest_private_config") {
+  visibility = [ ":ochamcrest" ]
+
+  # TODO(crbug.com/589097): remove this once OCHamcrest source has been fixed
+  # by removing the semicolon in HCGenericTestFailureReporter.m.
+  cflags = [ "-Wno-semicolon-before-method-body" ]
+  cflags_objc = [ "-fobjc-arc" ]
+}
+
+source_set("ochamcrest") {
+  testonly = true
+  configs += [
+    ":ochamcrest_config",
+    ":ochamcrest_private_config",
+    "//build/config/compiler:no_chromium_code",
+  ]
+  public_configs = [ ":ochamcrest_config" ]
+  public_deps = [
+    ":ochamcrest_copy_files",
+  ]
+  sources = get_target_outputs(":ochamcrest_copy_files")
+}