Mojo: clang-format mojo/public/c/... and add a presubmit check.

mojo/public/c/system/message_pipe.h

Index: mojo/public/c/system/message_pipe.h
diff --git a/mojo/public/c/system/message_pipe.h b/mojo/public/c/system/message_pipe.h
index 39b785961098933538d6ad029c8f5090408b310a..b08ba75d8e9fdefc8a4b162c51ddaf017cf51344 100644
--- a/mojo/public/c/system/message_pipe.h
+++ b/mojo/public/c/system/message_pipe.h
@@ -28,7 +28,7 @@ const MojoCreateMessagePipeOptionsFlags
     MOJO_CREATE_MESSAGE_PIPE_OPTIONS_FLAG_NONE = 0;
 #else
 #define MOJO_CREATE_MESSAGE_PIPE_OPTIONS_FLAG_NONE \
-    ((MojoCreateMessagePipeOptionsFlags) 0)
+  ((MojoCreateMessagePipeOptionsFlags)0)
 #endif
 
 MOJO_COMPILE_ASSERT(MOJO_ALIGNOF(int64_t) == 8, int64_t_has_weird_alignment);
@@ -48,7 +48,7 @@ typedef uint32_t MojoWriteMessageFlags;
 #ifdef __cplusplus
 const MojoWriteMessageFlags MOJO_WRITE_MESSAGE_FLAG_NONE = 0;
 #else
-#define MOJO_WRITE_MESSAGE_FLAG_NONE ((MojoWriteMessageFlags) 0)
+#define MOJO_WRITE_MESSAGE_FLAG_NONE ((MojoWriteMessageFlags)0)
 #endif
 
 // |MojoReadMessageFlags|: Used to specify different modes to
@@ -64,8 +64,8 @@ typedef uint32_t MojoReadMessageFlags;
 const MojoReadMessageFlags MOJO_READ_MESSAGE_FLAG_NONE = 0;
 const MojoReadMessageFlags MOJO_READ_MESSAGE_FLAG_MAY_DISCARD = 1 << 0;
 #else
-#define MOJO_READ_MESSAGE_FLAG_NONE ((MojoReadMessageFlags) 0)
-#define MOJO_READ_MESSAGE_FLAG_MAY_DISCARD ((MojoReadMessageFlags) 1 << 0)
+#define MOJO_READ_MESSAGE_FLAG_NONE ((MojoReadMessageFlags)0)
+#define MOJO_READ_MESSAGE_FLAG_MAY_DISCARD ((MojoReadMessageFlags)1 << 0)
 #endif
 
 #ifdef __cplusplus
@@ -94,8 +94,8 @@ extern "C" {
 // TODO(vtl): Add an options struct pointer argument.
 MOJO_SYSTEM_EXPORT MojoResult MojoCreateMessagePipe(
     const struct MojoCreateMessagePipeOptions* options,  // Optional.
-    MojoHandle* message_pipe_handle0,  // Out.
-    MojoHandle* message_pipe_handle1);  // Out.
+    MojoHandle* message_pipe_handle0,                    // Out.
+    MojoHandle* message_pipe_handle1);                   // Out.
 
 // Writes a message to the message pipe endpoint given by |message_pipe_handle|,
 // with message data specified by |bytes| of size |num_bytes| and attached
@@ -125,13 +125,13 @@ MOJO_SYSTEM_EXPORT MojoResult MojoCreateMessagePipe(
 //
 // TODO(vtl): Add a notion of capacity for message pipes, and return
 // |MOJO_RESULT_SHOULD_WAIT| if the message pipe is full.
-MOJO_SYSTEM_EXPORT MojoResult MojoWriteMessage(
-    MojoHandle message_pipe_handle,
-    const void* bytes,  // Optional.
-    uint32_t num_bytes,
-    const MojoHandle* handles,  // Optional.
-    uint32_t num_handles,
-    MojoWriteMessageFlags flags);
+MOJO_SYSTEM_EXPORT MojoResult
+    MojoWriteMessage(MojoHandle message_pipe_handle,
+                     const void* bytes,  // Optional.
+                     uint32_t num_bytes,
+                     const MojoHandle* handles,  // Optional.
+                     uint32_t num_handles,
+                     MojoWriteMessageFlags flags);
 
 // Reads a message from the message pipe endpoint given by
 // |message_pipe_handle|; also usable to query the size of the next message or
@@ -164,13 +164,13 @@ MOJO_SYSTEM_EXPORT MojoResult MojoWriteMessage(
 //       error code; should distinguish this from the hitting-system-limits
 //       case.)
 //   |MOJO_RESULT_SHOULD_WAIT| if no message was available to be read.
-MOJO_SYSTEM_EXPORT MojoResult MojoReadMessage(
-    MojoHandle message_pipe_handle,
-    void* bytes,  // Optional out.
-    uint32_t* num_bytes,  // Optional in/out.
-    MojoHandle* handles,  // Optional out.
-    uint32_t* num_handles,  // Optional in/out.
-    MojoReadMessageFlags flags);
+MOJO_SYSTEM_EXPORT MojoResult
+    MojoReadMessage(MojoHandle message_pipe_handle,
+                    void* bytes,            // Optional out.
+                    uint32_t* num_bytes,    // Optional in/out.
+                    MojoHandle* handles,    // Optional out.
+                    uint32_t* num_handles,  // Optional in/out.
+                    MojoReadMessageFlags flags);
 
 #ifdef __cplusplus
 }  // extern "C"