Reformat. Change indent to 2 spaces and line length to 80.

.clang-format

@@ -1,5 +1,5 @@
 ---
-Language:        Cpp
+Language: Cpp
 # BasedOnStyle:  WebKit
 AccessModifierOffset: -4
 AlignAfterOpenBracket: DontAlign
@@ -29,21 +29,21 @@ AttributeMacros:
 BinPackArguments: false
 BinPackParameters: false
 BraceWrapping:
-  AfterCaseLabel:  false
-  AfterClass:      false
+  AfterCaseLabel: false
+  AfterClass: false
   AfterControlStatement: Never
-  AfterEnum:       false
-  AfterFunction:   true
-  AfterNamespace:  false
+  AfterEnum: false
+  AfterFunction: true
+  AfterNamespace: false
   AfterObjCDeclaration: false
-  AfterStruct:     false
-  AfterUnion:      false
+  AfterStruct: false
+  AfterUnion: false
   AfterExternBlock: false
-  BeforeCatch:     false
-  BeforeElse:      false
+  BeforeCatch: false
+  BeforeElse: false
   BeforeLambdaBody: false
-  BeforeWhile:     false
-  IndentBraces:    false
+  BeforeWhile: false
+  IndentBraces: false
   SplitEmptyFunction: true
   SplitEmptyRecord: true
   SplitEmptyNamespace: true
@@ -56,19 +56,18 @@ BreakConstructorInitializersBeforeComma: false
 BreakConstructorInitializers: BeforeComma
 BreakAfterJavaFieldAnnotations: false
 BreakStringLiterals: true
-ColumnLimit:     90
-CommentPragmas:  '^ IWYU pragma:'
+ColumnLimit: 80
+CommentPragmas: "^ IWYU pragma:"
 CompactNamespaces: false
 ConstructorInitializerIndentWidth: 4
 ContinuationIndentWidth: 4
 Cpp11BracedListStyle: false
 DeriveLineEnding: true
 DerivePointerAlignment: false
-DisableFormat:   false
+DisableFormat: false
 EmptyLineAfterAccessModifier: Never
 EmptyLineBeforeAccessModifier: LogicalBlock
 ExperimentalAutoDetectBinPacking: false
-BasedOnStyle:    ''
 ConstructorInitializerAllOnOneLineOrOnePerLine: false
 AllowAllConstructorInitializersOnNextLine: true
 FixNamespaceComments: false
@@ -78,37 +77,37 @@ ForEachMacros:
   - BOOST_FOREACH
 IfMacros:
   - KJ_IF_MAYBE
-IncludeBlocks:   Preserve
+IncludeBlocks: Preserve
 IncludeCategories:
-  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
-    Priority:        2
-    SortPriority:    0
-    CaseSensitive:   false
-  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
-    Priority:        3
-    SortPriority:    0
-    CaseSensitive:   false
-  - Regex:           '.*'
-    Priority:        1
-    SortPriority:    0
-    CaseSensitive:   false
-IncludeIsMainRegex: '(Test)?$'
-IncludeIsMainSourceRegex: ''
+  - Regex: '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority: 2
+    SortPriority: 0
+    CaseSensitive: false
+  - Regex: '^(<|"(gtest|gmock|isl|json)/)'
+    Priority: 3
+    SortPriority: 0
+    CaseSensitive: false
+  - Regex: ".*"
+    Priority: 1
+    SortPriority: 0
+    CaseSensitive: false
+IncludeIsMainRegex: "(Test)?$"
+IncludeIsMainSourceRegex: ""
 IndentAccessModifiers: false
 IndentCaseLabels: false
 IndentCaseBlocks: false
 IndentGotoLabels: true
 IndentPPDirectives: None
 IndentExternBlock: AfterExternBlock
-IndentWidth:     4
+IndentWidth: 2
 IndentWrappedFunctionNames: false
 InsertTrailingCommas: None
 JavaScriptQuotes: Leave
 JavaScriptWrapImports: true
 KeepEmptyLinesAtTheStartOfBlocks: true
 LambdaBodyIndentation: Signature
-MacroBlockBegin: ''
-MacroBlockEnd:   ''
+MacroBlockBegin: ""
+MacroBlockEnd: ""
 MaxEmptyLinesToKeep: 1
 NamespaceIndentation: Inner
 ObjCBinPackProtocolList: Auto
@@ -126,11 +125,11 @@ PenaltyExcessCharacter: 1000000
 PenaltyReturnTypeOnItsOwnLine: 60
 PenaltyIndentedWhitespace: 0
 PointerAlignment: Left
-PPIndentWidth:   -1
+PPIndentWidth: -1
 ReferenceAlignment: Pointer
-ReflowComments:  true
+ReflowComments: true
 ShortNamespaceLines: 1
-SortIncludes:    CaseSensitive
+SortIncludes: CaseSensitive
 SortJavaStaticImport: Before
 SortUsingDeclarations: true
 SpaceAfterCStyleCast: false
@@ -147,30 +146,29 @@ SpaceBeforeRangeBasedForLoopColon: true
 SpaceInEmptyBlock: false
 SpaceInEmptyParentheses: false
 SpacesBeforeTrailingComments: 1
-SpacesInAngles:  Never
+SpacesInAngles: Never
 SpacesInConditionalStatement: false
 SpacesInContainerLiterals: true
 SpacesInCStyleCastParentheses: false
 SpacesInLineCommentPrefix:
-  Minimum:         1
-  Maximum:         -1
+  Minimum: 1
+  Maximum: -1
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
 SpaceBeforeSquareBrackets: false
 BitFieldColonSpacing: Both
-Standard:        Latest
+Standard: Latest
 StatementAttributeLikeMacros:
   - Q_EMIT
 StatementMacros:
   - Q_UNUSED
   - QT_REQUIRE_VERSION
-TabWidth:        8
-UseCRLF:         false
-UseTab:          Never
+TabWidth: 8
+UseCRLF: false
+UseTab: Never
 WhitespaceSensitiveMacros:
   - STRINGIZE
   - PP_STRINGIZE
   - BOOST_PP_STRINGIZE
   - NS_SWIFT_NAME
   - CF_SWIFT_NAME
-...