gn format everything.

third_party/WebKit/Source/platform/heap/asm/BUILD.gn

Index: third_party/WebKit/Source/platform/heap/asm/BUILD.gn
diff --git a/third_party/WebKit/Source/platform/heap/asm/BUILD.gn b/third_party/WebKit/Source/platform/heap/asm/BUILD.gn
index 00681e6687911c7399cc90c9f5bc90b1b3d79a2d..d3a5e6ab96366b35d0e9259ead9c6c163104523e 100644
--- a/third_party/WebKit/Source/platform/heap/asm/BUILD.gn
+++ b/third_party/WebKit/Source/platform/heap/asm/BUILD.gn
@@ -3,46 +3,49 @@
 # found in the LICENSE file.
 
 if (current_cpu == "x86" || current_cpu == "x64") {
-import("//third_party/yasm/yasm_assemble.gni")
+  import("//third_party/yasm/yasm_assemble.gni")
 
-yasm_assemble("asm") {
-  assert(current_cpu == "x86" || current_cpu == "x64")
+  yasm_assemble("asm") {
+    assert(current_cpu == "x86" || current_cpu == "x64")
 
-  sources = [ "SaveRegisters_x86.asm" ]
+    sources = [
+      "SaveRegisters_x86.asm",
+    ]
 
-  yasm_flags = []
-  if (is_mac) {
-    # Necessary to ensure symbols end up with a _ prefix; added by
-    # yasm_compile.gypi for Windows, but not Mac.
-    yasm_flags += [ "-DPREFIX" ]
-  }
-  if (current_cpu == "x64") {
-    if (is_win) {
-      yasm_flags += [ "-DX64WIN=1" ]
-    } else {
-      yasm_flags += [ "-DX64POSIX=1" ]
+    yasm_flags = []
+    if (is_mac) {
+      # Necessary to ensure symbols end up with a _ prefix; added by
+      # yasm_compile.gypi for Windows, but not Mac.
+      yasm_flags += [ "-DPREFIX" ]
+    }
+    if (current_cpu == "x64") {
+      if (is_win) {
+        yasm_flags += [ "-DX64WIN=1" ]
+      } else {
+        yasm_flags += [ "-DX64POSIX=1" ]
+      }
+    } else {  # current_cpu == "x86"
+      yasm_flags += [ "-DIA32=1" ]
     }
-  } else {  # current_cpu == "x86"
-    yasm_flags += [ "-DIA32=1" ]
-  }
-}
-
-} else { # current_cpu == "x86" || current_cpu == "x64"
-
-source_set("asm") {
-  if (current_cpu == "arm") {
-    sources = [ "SaveRegisters_arm.S" ]
-  } else if (current_cpu == "arm64") {
-    sources = [ "SaveRegisters_arm64.S" ]
-  } else if (current_cpu == "mipsel") {
-    sources = [ "SaveRegisters_mips.S" ]
   }
+} else {  # current_cpu == "x86" || current_cpu == "x64"
+  source_set("asm") {
+    if (current_cpu == "arm") {
+      sources = [
+        "SaveRegisters_arm.S",
+      ]
+    } else if (current_cpu == "arm64") {
+      sources = [
+        "SaveRegisters_arm64.S",
+      ]
+    } else if (current_cpu == "mipsel") {
+      sources = [
+        "SaveRegisters_mips.S",
+      ]
+    }
 
-  if (current_cpu == "arm") {
-    defines = [ "ARM=1" ]
+    if (current_cpu == "arm") {
+      defines = [ "ARM=1" ]
+    }
   }
-}
-
-} # current_cpu == "x86" || current_cpu == "x64"
-
-
+}  # current_cpu == "x86" || current_cpu == "x64"