[ClangFormat] IndentWrappedFunctionNames should be true in the google…

… ObjC style

Summary:
If we write the following code, it goes over 100 columns, so we need to wrap it:

```
- (VeryLongReturnTypeName)veryLongMethodParameter:(VeryLongParameterName)thisIsAVeryLongParameterName
                              longMethodParameter:(LongParameterName)thisIsAlsoAnotherLongParameterName;
```

Currently, clang-format with the google style aligns the method parameter names on the first column:

```
- (VeryLongReturnTypeName)
veryLongMethodParameter:(VeryLongParameterName)thisIsAVeryLongParameterName
    longMethodParameter:(LongParameterName)thisIsAlsoAnotherLongParameterName;
```

We'd like clang-format in the google style to align these to column 4 for Objective-C:

```
- (VeryLongReturnTypeName)
    veryLongMethodParameter:(VeryLongParameterName)thisIsAVeryLongParameterName
            longMethodParameter:(LongParameterName)thisIsAlsoAnotherLongParameterName;
```

Test Plan: make -j12 FormatTests && ./tools/clang/unittests/Format/FormatTests

Reviewers: krasimir, djasper, klimek

Reviewed By: djasper

Subscribers: cfe-commits, thakis

Differential Revision: https://reviews.llvm.org/D41195

llvm-svn: 320714

clang/lib/Format/Format.cpp

@@ -732,6 +732,7 @@ FormatStyle getGoogleStyle(FormatStyle::LanguageKind Language) {
     GoogleStyle.SpacesInContainerLiterals = false;
   } else if (Language == FormatStyle::LK_ObjC) {
     GoogleStyle.ColumnLimit = 100;
+    GoogleStyle.IndentWrappedFunctionNames = true;
   }
 
   return GoogleStyle;

clang/unittests/Format/FormatTestObjC.cpp

@@ -382,9 +382,9 @@ TEST_F(FormatTestObjC, FormatObjCMethodDeclarations) {
                "            ofSize:(size_t)height\n"
                "                  :(size_t)width;");
 
+  Style = getGoogleStyle(FormatStyle::LK_ObjC);
   // Continuation indent width should win over aligning colons if the function
   // name is long.
-  Style = getGoogleStyle(FormatStyle::LK_ObjC);
   Style.ColumnLimit = 40;
   Style.IndentWrappedFunctionNames = true;
   verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n"
@@ -395,7 +395,10 @@ TEST_F(FormatTestObjC, FormatObjCMethodDeclarations) {
   verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n"
                "       aShortf:(NSRect)theRect {\n"
                "}");
-
+  // Wrapped method parameters should be indented.
+  verifyFormat("- (LongReturnTypeName)\n"
+               "    longParam:(ParamName)longParamName\n"
+               "        param:(paramName)paramName;");
   // Format pairs correctly.
   Style.ColumnLimit = 80;
   verifyFormat("- (void)drawRectOn:(id)surface\n"