Use base namespace for FilePath in content/browser

content/browser/gpu/webgl_conformance_test.cc

Index: content/browser/gpu/webgl_conformance_test.cc
diff --git a/content/browser/gpu/webgl_conformance_test.cc b/content/browser/gpu/webgl_conformance_test.cc
index 1e54f147b2fe2f84bc6db84cc30dd6c9952f1cbf..bf69f1f44ca14bd847c8685b01a39849c510c328 100644
--- a/content/browser/gpu/webgl_conformance_test.cc
+++ b/content/browser/gpu/webgl_conformance_test.cc
@@ -29,7 +29,7 @@ class WebGLConformanceTest : public ContentBrowserTest {
   }
 
   virtual void SetUpInProcessBrowserTestFixture() {
-    FilePath webgl_conformance_path;
+    base::FilePath webgl_conformance_path;
     PathService::Get(base::DIR_SOURCE_ROOT, &webgl_conformance_path);
     webgl_conformance_path = webgl_conformance_path.Append(
         FILE_PATH_LITERAL("third_party"));
@@ -74,7 +74,7 @@ class WebGLConformanceTest : public ContentBrowserTest {
   }
 
  private:
-  FilePath test_path_;
+  base::FilePath test_path_;
   GPUTestBotConfig bot_config_;
   GPUTestExpectationsParser test_expectations_;
 };