Revert "Add packFrom, unpackTo and is in google.protobuf.Any."

This reverts commit 7366efd8.

Still some discussion about the api to expose the helpers with.

objectivec/GPBWellKnownTypes.h

@@ -30,11 +30,9 @@
 
 #import <Foundation/Foundation.h>
 
-#import "google/protobuf/Any.pbobjc.h"
 #import "google/protobuf/Duration.pbobjc.h"
 #import "google/protobuf/Timestamp.pbobjc.h"
 
-
 NS_ASSUME_NONNULL_BEGIN
 
 // Extension to GPBTimestamp to work with standard Foundation time/date types.
@@ -51,22 +49,4 @@ NS_ASSUME_NONNULL_BEGIN
 - (instancetype)initWithTimeIntervalSince1970:(NSTimeInterval)timeIntervalSince1970;
 @end
 
-// Extension to GPBAny to support packing and unpacking for arbitrary messages.
-@interface GPBAny (GPBWellKnownTypes)
-// Initialize GPBAny instance with the given message. e.g., for google.protobuf.foo, type
-// url will be "type.googleapis.com/google.protobuf.foo" and value will be serialized foo.
-- (instancetype)initWithMessage:(GPBMessage*)message;
-// Serialize the given message to the value in GPBAny. Type url will also be updated.
-- (void)setMessage:(GPBMessage*)message;
-// Parse the value in GPBAny to the given message. If messageClass message doesn't match the
-// type url in GPBAny, nil is returned.
-- (GPBMessage*)messageOfClass:(Class)messageClass;
-// True if the given type matches the type url in GPBAny.
-- (BOOL)wrapsMessageOfClass:(Class)messageClass;
-@end
-
-// Common prefix of type url in GPBAny, which is @"type.googleapis.com/". All valid
-// type urls in any should start with this prefix.
-extern NSString *const GPBTypeGoogleApisComPrefix;
-
 NS_ASSUME_NONNULL_END

objectivec/GPBWellKnownTypes.m

@@ -115,52 +115,3 @@ static int32_t SecondsAndNanosFromTimeIntervalSince1970(NSTimeInterval time,
 }
 
 @end
-
-NSString *const GPBTypeGoogleApisComPrefix = @"type.googleapis.com/";
-
-@implementation GPBAny (GBPWellKnownTypes)
-
-- (instancetype)initWithMessage:(GPBMessage*)message {
-  self = [super init];
-  if (self) {
-    [self setMessage:message];
-  }
-  return self;
-}
-
-- (NSString*)typeName {
-  NSAssert([self.typeURL hasPrefix:GPBTypeGoogleApisComPrefix],
-           @"Invalid any type url (%@).", self.typeURL);
-  if (![self.typeURL hasPrefix:GPBTypeGoogleApisComPrefix]) {
-    return nil;
-  }
-  return [self.typeURL substringFromIndex:[GPBTypeGoogleApisComPrefix length]];
-}
-
-- (void)setMessage:(GPBMessage*)message {
-  self.typeURL = [GPBTypeGoogleApisComPrefix stringByAppendingString:message.descriptor.name];
-  self.value = message.data;
-}
-
-- (GPBMessage*)messageOfClass:(Class)messageClass {
-  if ([self wrapsMessageOfClass:messageClass]) {
-    GPBMessage* message = [messageClass message];
-    [message mergeFromData:self.value extensionRegistry:nil];
-    return message;
-  } else {
-    return nil;
-  }
-}
-
-- (BOOL)wrapsMessageOfClass:(Class)messageClass {
-  NSAssert([messageClass isSubclassOfClass:[GPBMessage class]],
-           @"Given class (%@) is not a subclass of GPBMessage",
-           [messageClass name]);
-  if (![messageClass isSubclassOfClass:[GPBMessage class]]) {
-    return NO;
-  }
-  return [[self typeName] isEqualToString:messageClass.descriptor.name];
-}
-
-@end
-

objectivec/Tests/GPBWellKnownTypesTest.m

@@ -28,9 +28,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#import "google/protobuf/Unittest.pbobjc.h"
 #import "GPBWellKnownTypes.h"
-#import "GPBTestUtilities.h"
 
 #import <XCTest/XCTest.h>
 
@@ -40,7 +38,7 @@ static const NSTimeInterval kFutureOffsetInterval = 15000;
 // Nanosecond time accuracy
 static const NSTimeInterval kTimeAccuracy = 1e-9;
 
-@interface WellKnownTypesTest : GPBTestCase
+@interface WellKnownTypesTest : XCTestCase
 @end
 
 @implementation WellKnownTypesTest
@@ -101,53 +99,4 @@ static const NSTimeInterval kTimeAccuracy = 1e-9;
   [duration2 release];
 }
 
-- (void)testAnyPackingAndUnpacking {
-  TestAllTypes *from = [TestAllTypes message];
-  [self setAllFields:from repeatedCount:1];
-  NSData *data = from.data;
-
-  // Test initWithMessage
-  GPBAny *anyInited = [[GPBAny alloc] initWithMessage:from];
-  XCTAssertEqualObjects(
-      [GPBTypeGoogleApisComPrefix stringByAppendingString:from.descriptor.name],
-      anyInited.typeURL);
-  XCTAssertEqualObjects(data, anyInited.value);
-  [anyInited release];
-
-  // Test setMessage.
-  GPBAny *any = [GPBAny message];
-  [any setMessage:from];
-  XCTAssertEqualObjects(
-      [GPBTypeGoogleApisComPrefix stringByAppendingString:from.descriptor.name],
-      any.typeURL);
-  XCTAssertEqualObjects(data, any.value);
-
-  // Test messageOfClass
-  TestAllTypes *to = (TestAllTypes*)[any messageOfClass:[TestAllTypes class]];
-  XCTAssertEqualObjects(from, to);
-  XCTAssertEqual([any messageOfClass:[ForeignMessage class]], nil);
-  XCTAssertEqual([[GPBAny message] messageOfClass:[TestAllTypes class]], nil);
-
-  // Test setMessage with another type.
-  ForeignMessage *from2 = [ForeignMessage message];
-  [any setMessage:from2];
-  XCTAssertEqualObjects(
-      [GPBTypeGoogleApisComPrefix stringByAppendingString:from2.descriptor.name],
-      any.typeURL);
-  XCTAssertEqual(0UL, [any.value length]);
-
-  // Test wrapsMessageOfClass
-  XCTAssertTrue([any wrapsMessageOfClass:[from2 class]]);
-  XCTAssertFalse([any wrapsMessageOfClass:[from class]]);
-#if !defined(NS_BLOCK_ASSERTIONS)
-  // If assert is enabled, throw exception when the passed message class to
-  // wrapsMessageOfClass is not a child of GPBMessage.
-  XCTAssertThrows([any wrapsMessageOfClass:[NSString class]]);
-#else
-  // If assert is disabled, return false when the passed message class to
-  // wrapsMessageOfClass is not a child of GPBMessage.
-  XCTAssertFalse([any wrapsMessageOfClass:[NSString class]]);
-#endif
-}
-
 @end