Fix GoogleMapsUtils imports for both SPM and CocoaPods

Author: jokerttu

packages/google_maps_flutter/google_maps_flutter_ios/ios/google_maps_flutter_ios.podspec

@@ -36,6 +36,7 @@ Downloaded by pub (not CocoaPods).
   s.xcconfig = {
     'LIBRARY_SEARCH_PATHS' => '$(inherited) $(TOOLCHAIN_DIR)/usr/lib/swift/$(PLATFORM_NAME)/ $(SDKROOT)/usr/lib/swift',
     'LD_RUNPATH_SEARCH_PATHS' => '$(inherited) /usr/lib/swift',
+    'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) FGM_USING_COCOAPODS=1'
   }
   s.resource_bundles = {'google_maps_flutter_ios_privacy' => ['google_maps_flutter_ios/Sources/google_maps_flutter_ios/Resources/PrivacyInfo.xcprivacy']}
 end

packages/google_maps_flutter/google_maps_flutter_ios/ios/google_maps_flutter_ios/Sources/google_maps_flutter_ios/FLTGoogleMapHeatmapController.m

@@ -3,7 +3,15 @@
 // found in the LICENSE file.
 
 #import "FLTGoogleMapHeatmapController.h"
+
+/// If Swift Package Manager is in use, Objective-C headers are available under the
+/// GoogleMapsUtilsObjC package. When using CocoaPods, the headers are provided by the
+/// GoogleMapsUtils package.
+#ifdef FGM_USING_COCOAPODS
+@import GoogleMapsUtils;
+#else
 @import GoogleMapsUtilsObjC;
+#endif
 #import "FLTGoogleMapJSONConversions.h"
 
 @interface FLTGoogleMapHeatmapController ()

packages/google_maps_flutter/google_maps_flutter_ios/ios/google_maps_flutter_ios/Sources/google_maps_flutter_ios/GoogleMapController.m

@@ -2,7 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+/// If Swift Package Manager is in use, Objective-C headers are available under the
+/// GoogleMapsUtilsObjC package. When using CocoaPods, the headers are provided by the
+/// GoogleMapsUtils package.
+#ifdef FGM_USING_COCOAPODS
+@import GoogleMapsUtils;
+#else
 @import GoogleMapsUtilsObjC;
+#endif
 
 #import "GoogleMapController.h"
 

packages/google_maps_flutter/google_maps_flutter_ios/ios/google_maps_flutter_ios/Sources/google_maps_flutter_ios/include/google_maps_flutter_ios/FGMClusterManagersController.h

@@ -4,7 +4,15 @@
 
 #import <Flutter/Flutter.h>
 #import <GoogleMaps/GoogleMaps.h>
+
+/// If Swift Package Manager is in use, Objective-C headers are available under the
+/// GoogleMapsUtilsObjC package. When using CocoaPods, the headers are provided by the
+/// GoogleMapsUtils package.
+#ifdef FGM_USING_COCOAPODS
+@import GoogleMapsUtils;
+#else
 @import GoogleMapsUtilsObjC;
+#endif
 
 #import "messages.g.h"
 

packages/google_maps_flutter/google_maps_flutter_ios/ios/google_maps_flutter_ios/Sources/google_maps_flutter_ios/include/google_maps_flutter_ios/FLTGoogleMapHeatmapController.h

@@ -4,7 +4,15 @@
 
 #import <Flutter/Flutter.h>
 #import <GoogleMaps/GoogleMaps.h>
+
+/// If Swift Package Manager is in use, Objective-C headers are available under the
+/// GoogleMapsUtilsObjC package. When using CocoaPods, the headers are provided by the
+/// GoogleMapsUtils package.
+#ifdef FGM_USING_COCOAPODS
+@import GoogleMapsUtils;
+#else
 @import GoogleMapsUtilsObjC;
+#endif
 
 #import "messages.g.h"
 

packages/google_maps_flutter/google_maps_flutter_ios/ios/google_maps_flutter_ios/Sources/google_maps_flutter_ios/include/google_maps_flutter_ios/FLTGoogleMapJSONConversions.h

@@ -5,7 +5,15 @@
 #import <Flutter/Flutter.h>
 #import <Foundation/Foundation.h>
 #import <GoogleMaps/GoogleMaps.h>
+
+/// If Swift Package Manager is in use, Objective-C headers are available under the
+/// GoogleMapsUtilsObjC package. When using CocoaPods, the headers are provided by the
+/// GoogleMapsUtils package.
+#ifdef FGM_USING_COCOAPODS
+@import GoogleMapsUtils;
+#else
 @import GoogleMapsUtilsObjC;
+#endif
 
 #import "messages.g.h"