Avoid basename conflict in text_composition

ui/base/ime/BUILD.gn

Index: ui/base/ime/BUILD.gn
diff --git a/ui/base/ime/BUILD.gn b/ui/base/ime/BUILD.gn
index e6974021af55bde3df9be9c81e5dde852fb8aaab..99e4aaeed476bb155626b5944be43686db0921fa 100644
--- a/ui/base/ime/BUILD.gn
+++ b/ui/base/ime/BUILD.gn
@@ -14,8 +14,8 @@ component("ime") {
     "chromeos/character_composer.h",
     "chromeos/component_extension_ime_manager.cc",
     "chromeos/component_extension_ime_manager.h",
-    "chromeos/composition_text.cc",
-    "chromeos/composition_text.h",
+    "chromeos/composition_text_chromeos.cc",
+    "chromeos/composition_text_chromeos.h",
     "chromeos/extension_ime_util.cc",
     "chromeos/extension_ime_util.h",
     "chromeos/fake_ime_keyboard.cc",
@@ -166,10 +166,9 @@ component("ime") {
   }
 
   if (is_win) {
-    cflags = [
-      "/wd4324",  # Structure was padded due to __declspec(align()), which is
-                  # uninteresting.
-    ]
+    cflags = [ "/wd4324" ]  # Structure was padded due to __declspec(align()), which is
+                            # uninteresting.
+
     libs = [ "imm32.lib" ]
   }