Move Linux shell docstrings to headers (#17410)

Update docstrings for typos and grammar style specified in the style guide.

shell/platform/linux/fl_dart_project.cc

@@ -6,13 +6,6 @@
 
 #include <gmodule.h>
 
-/**
- * FlDartProject:
- *
- * #FlDartProject represents a Dart project. It is used provide information
- * about the application when creating a #FlView.
- */
-
 struct _FlDartProject {
   GObject parent_instance;
 
@@ -112,62 +105,21 @@ static void fl_dart_project_class_init(FlDartProjectClass* klass) {
 
 static void fl_dart_project_init(FlDartProject* self) {}
 
-/**
- * fl_dart_project_new:
- * @path: a file path, e.g. "my_dart_project"
- *
- * Create a Flutter project. The project path should contain the following
- * top-level items:
- * - icudtl.dat (provided as a resource by the Flutter tool)
- * - flutter_assets (as built by the Flutter tool)
- *
- * The path can either be absolute, or relative to the directory containing the
- * running executable.
- *
- * Returns: a new #FlDartProject
- */
 G_MODULE_EXPORT FlDartProject* fl_dart_project_new(const gchar* path) {
   return static_cast<FlDartProject*>(
       g_object_new(fl_dart_project_get_type(), "path", path, nullptr));
 }
 
-/**
- * fl_dart_project_get_path:
- * @view: a #FlDartProject
- *
- * Get the path to the directory containing the Flutter application.
- *
- * Returns: (type filename): a file path, e.g. "/projects/my_dart_project"
- */
 G_MODULE_EXPORT const gchar* fl_dart_project_get_path(FlDartProject* self) {
   g_return_val_if_fail(FL_IS_DART_PROJECT(self), nullptr);
   return self->path;
 }
 
-/**
- * fl_dart_project_get_assets_path:
- * @view: a #FlDartProject
- *
- * Get the path to the directory containing the assets used in the Flutter
- * application.
- *
- * Returns: (type filename): a file path, e.g.
- * "/projects/my_dart_project/assets"
- */
 G_MODULE_EXPORT gchar* fl_dart_project_get_assets_path(FlDartProject* self) {
   g_return_val_if_fail(FL_IS_DART_PROJECT(self), nullptr);
   return g_build_filename(self->path, "flutter_assets", NULL);
 }
 
-/**
- * fl_dart_project_get_icu_data_path:
- * @view: a #FlDartProject
- *
- * Get the path to the ICU data file in the Flutter application.
- *
- * Returns: (type filename): a file path, e.g.
- * "/projects/my_dart_project/icudtl.dat"
- */
 G_MODULE_EXPORT gchar* fl_dart_project_get_icu_data_path(FlDartProject* self) {
   g_return_val_if_fail(FL_IS_DART_PROJECT(self), nullptr);
   return g_build_filename(self->path, "icudtl.dat", NULL);

shell/platform/linux/fl_view.cc

@@ -11,12 +11,6 @@
 
 #include "flutter/shell/platform/embedder/embedder.h"
 
-/**
- * FlView:
- *
- * #FlView is a GTK widget that is capable of displaying a Flutter application.
- */
-
 struct _FlView {
   GtkWidget parent_instance;
 
@@ -278,14 +272,6 @@ static void fl_view_class_init(FlViewClass* klass) {
 
 static void fl_view_init(FlView* self) {}
 
-/**
- * fl_view_new:
- * @project: The project to show.
- *
- * Create a widget to show Flutter application.
- *
- * Returns: a new #FlView
- */
 G_MODULE_EXPORT FlView* fl_view_new(FlDartProject* project) {
   return static_cast<FlView*>(
       g_object_new(fl_view_get_type(), "flutter-project", project, nullptr));

shell/platform/linux/public/flutter_linux/fl_dart_project.h

@@ -15,12 +15,75 @@ G_BEGIN_DECLS
 
 G_DECLARE_FINAL_TYPE(FlDartProject, fl_dart_project, FL, DART_PROJECT, GObject)
 
+/**
+ * FlDartProject:
+ *
+ * #FlDartProject represents a Dart project. It is used to provide information
+ * about the application when creating a #FlView.
+ */
+
+/**
+ * fl_dart_project_new:
+ * @path: a file path, e.g. "my_dart_project"
+ *
+ * Create a Flutter project. The project path should contain the following
+ * top-level items:
+ * - icudtl.dat (provided as a resource by the Flutter tool)
+ * - flutter_assets (as built by the Flutter tool)
+ *
+ * The path can either be absolute, or relative to the directory containing the
+ * running executable.
+ *
+ * Returns: a new #FlDartProject
+ */
+
+/**
+ * fl_dart_project_new:
+ * @path: a file path, e.g. "my_dart_project"
+ *
+ * Creates a Flutter project. The project path should contain the following
+ * top-level items:
+ * - icudtl.dat (provided as a resource by the Flutter tool)
+ * - flutter_assets (as built by the Flutter tool)
+ *
+ * The path can either be absolute, or relative to the directory containing the
+ * running executable.
+ *
+ * Returns: a new #FlDartProject
+ */
 FlDartProject* fl_dart_project_new(const gchar* path);
 
+/**
+ * fl_dart_project_get_path:
+ * @project: a #FlDartProject
+ *
+ * Gets the path to the directory containing the Flutter application.
+ *
+ * Returns: (type filename): a file path, e.g. "/projects/my_dart_project"
+ */
 const gchar* fl_dart_project_get_path(FlDartProject* project);
 
+/**
+ * fl_dart_project_get_assets_path:
+ * @project: a #FlDartProject
+ *
+ * Gets the path to the directory containing the assets used in the Flutter
+ * application.
+ *
+ * Returns: (type filename): a file path, e.g.
+ * "/projects/my_dart_project/assets"
+ */
 gchar* fl_dart_project_get_assets_path(FlDartProject* project);
 
+/**
+ * fl_dart_project_get_icu_data_path:
+ * @project: a #FlDartProject
+ *
+ * Gets the path to the ICU data file in the Flutter application.
+ *
+ * Returns: (type filename): a file path, e.g.
+ * "/projects/my_dart_project/icudtl.dat"
+ */
 gchar* fl_dart_project_get_icu_data_path(FlDartProject* project);
 
 G_END_DECLS

shell/platform/linux/public/flutter_linux/fl_view.h

@@ -17,6 +17,20 @@ G_BEGIN_DECLS
 
 G_DECLARE_FINAL_TYPE(FlView, fl_view, FL, VIEW, GtkWidget)
 
+/**
+ * FlView:
+ *
+ * #FlView is a GTK widget that is capable of displaying a Flutter application.
+ */
+
+/**
+ * fl_view_new:
+ * @project: The project to show.
+ *
+ * Creates a widget to show Flutter application.
+ *
+ * Returns: a new #FlView
+ */
 FlView* fl_view_new(FlDartProject* project);
 
 G_END_DECLS