Consistent formatting for Dawn/Tint.

This CL updates the clang format files to have a single shared format
between Dawn and Tint. The major changes are tabs are 4 spaces, lines
are 100 columns and namespaces are not indented.

Bug: dawn:1339
Change-Id: I4208742c95643998d9fd14e77a9cc558071ded39
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/87603
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/src/tint/ast/continue_statement_test.cc b/src/tint/ast/continue_statement_test.cc
index 943cdee..31cabdd 100644
--- a/src/tint/ast/continue_statement_test.cc
+++ b/src/tint/ast/continue_statement_test.cc
@@ -22,15 +22,15 @@
 using ContinueStatementTest = TestHelper;
 
 TEST_F(ContinueStatementTest, Creation_WithSource) {
-  auto* stmt = create<ContinueStatement>(Source{Source::Location{20, 2}});
-  auto src = stmt->source;
-  EXPECT_EQ(src.range.begin.line, 20u);
-  EXPECT_EQ(src.range.begin.column, 2u);
+    auto* stmt = create<ContinueStatement>(Source{Source::Location{20, 2}});
+    auto src = stmt->source;
+    EXPECT_EQ(src.range.begin.line, 20u);
+    EXPECT_EQ(src.range.begin.column, 2u);
 }
 
 TEST_F(ContinueStatementTest, IsContinue) {
-  auto* stmt = create<ContinueStatement>();
-  EXPECT_TRUE(stmt->Is<ContinueStatement>());
+    auto* stmt = create<ContinueStatement>();
+    EXPECT_TRUE(stmt->Is<ContinueStatement>());
 }
 
 }  // namespace