chore: fix some typos (#40506)

shell/common/api/BUILD.gn

@@ -11,7 +11,7 @@ mojom("mojo") {
   ]
 
   # Needed for component build or we'll get duplicate symbols for many mojom
-  # interfaces aready included in blink_common.dll
+  # interfaces already included in blink_common.dll
   overridden_deps = [ "//third_party/blink/public/mojom:mojom_core" ]
   component_deps = [ "//third_party/blink/public/common" ]
 }

shell/common/gin_helper/event_emitter.h

@@ -21,7 +21,7 @@ class RenderFrameHost;
 
 namespace gin_helper {
 
-// Provide helperers to emit event in JavaScript.
+// Provide helpers to emit event in JavaScript.
 template <typename T>
 class EventEmitter : public gin_helper::Wrappable<T> {
  public:

shell/common/node_bindings.cc

@@ -249,7 +249,7 @@ v8::ModifyCodeGenerationFromStringsResult ModifyCodeGenerationFromStrings(
   }
 
   // If we get here then we have a node environment, so either a) we're in the
-  // non-rendrer process, or b) we're in the renderer process in a context that
+  // non-renderer process, or b) we're in the renderer process in a context that
   // has both node and blink, i.e. contextIsolation disabled.
 
   // If we're in the renderer with contextIsolation disabled, ask blink first