Don't export platform::* from gpui

I'd like to avoid cluttering the top-level namespace with all the platform-
specific types.

crates/editor/src/editor.rs

@@ -39,11 +39,10 @@ use gpui::{
     geometry::vector::Vector2F,
     impl_actions, impl_internal_actions,
     keymap_matcher::KeymapContext,
-    platform::CursorStyle,
+    platform::{CursorStyle, MouseButton},
     serde_json::{self, json},
     AnyViewHandle, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
-    ModelHandle, MouseButton, RenderContext, Subscription, Task, View, ViewContext, ViewHandle,
-    WeakViewHandle,
+    ModelHandle, RenderContext, Subscription, Task, View, ViewContext, ViewHandle, WeakViewHandle,
 };
 use highlight_matching_bracket::refresh_matching_bracket_highlights;
 use hover_popover::{hide_hover, HideHover, HoverState};
@@ -6866,7 +6865,7 @@ impl View for Editor {
 
     fn modifiers_changed(
         &mut self,
-        event: &gpui::ModifiersChangedEvent,
+        event: &gpui::platform::ModifiersChangedEvent,
         cx: &mut ViewContext<Self>,
     ) -> bool {
         let pending_selection = self.has_pending_selection();

crates/editor/src/element.rs

@@ -29,11 +29,10 @@ use gpui::{
         PathBuilder,
     },
     json::{self, ToJson},
-    platform::CursorStyle,
+    platform::{CursorStyle, Modifiers, MouseButton, MouseButtonEvent, MouseMovedEvent},
     text_layout::{self, Line, RunStyle, TextLayoutCache},
     AppContext, Axis, Border, CursorRegion, Element, ElementBox, EventContext, LayoutContext,
-    Modifiers, MouseButton, MouseButtonEvent, MouseMovedEvent, MouseRegion, PaintContext, Quad,
-    SceneBuilder, SizeConstraint, ViewContext, WeakViewHandle,
+    MouseRegion, PaintContext, Quad, SceneBuilder, SizeConstraint, ViewContext, WeakViewHandle,
 };
 use itertools::Itertools;
 use json::json;

crates/editor/src/hover_popover.rs

@@ -3,9 +3,8 @@ use gpui::{
     actions,
     elements::{Flex, MouseEventHandler, Padding, Text},
     impl_internal_actions,
-    platform::CursorStyle,
-    AppContext, Axis, Element, ElementBox, ModelHandle, MouseButton, RenderContext, Task,
-    ViewContext,
+    platform::{CursorStyle, MouseButton},
+    AppContext, Axis, Element, ElementBox, ModelHandle, RenderContext, Task, ViewContext,
 };
 use language::{Bias, DiagnosticEntry, DiagnosticSeverity};
 use project::{HoverBlock, Project};

crates/editor/src/link_go_to_definition.rs

@@ -358,7 +358,10 @@ fn go_to_fetched_definition_of_kind(
 #[cfg(test)]
 mod tests {
     use futures::StreamExt;
-    use gpui::{Modifiers, ModifiersChangedEvent, View};
+    use gpui::{
+        platform::{self, Modifiers, ModifiersChangedEvent},
+        View,
+    };
     use indoc::indoc;
     use lsp::request::{GotoDefinition, GotoTypeDefinition};
 
@@ -430,7 +433,7 @@ mod tests {
         // Unpress shift causes highlight to go away (normal goto-definition is not valid here)
         cx.update_editor(|editor, cx| {
             editor.modifiers_changed(
-                &gpui::ModifiersChangedEvent {
+                &platform::ModifiersChangedEvent {
                     modifiers: Modifiers {
                         cmd: true,
                         ..Default::default()